Navigating car troubles can be stressful, especially when the check engine light illuminates on your Toyota dashboard. Understanding Toyota fault codes is the first step towards diagnosing and resolving these issues efficiently. This comprehensive list of OBD2 (On-Board Diagnostics II) codes is tailored for Toyota vehicles, helping you decipher what your car is trying to communicate.
OBD2 is a standardized system that allows your vehicle’s computer to monitor various systems and report malfunctions. When a problem is detected, a fault code is stored, and the check engine light usually comes on. These codes are invaluable for mechanics and car owners alike to pinpoint the source of the problem.
This guide provides an extensive list of Toyota OBD2 fault codes, encompassing both generic codes applicable to all vehicles (P0xxx) and manufacturer-specific codes (P1xxx) unique to Toyota. Understanding these codes empowers you to communicate effectively with your mechanic, perform your own initial diagnostics, and ensure your Toyota runs smoothly.
Generic OBD-II Codes (P0xxx) for Toyota
These P0xxx codes are standardized across all vehicle manufacturers, including Toyota. They cover a wide range of common automotive issues related to the powertrain, fuel system, ignition, exhaust, and more.
P0100 – P0104: Mass Air Flow (MAF) Sensor Circuit
- P0100: Mass or Volume Air Flow Circuit Malfunction
- P0101: Mass or Volume Air Flow Circuit Range/Performance Problem
- P0102: Mass or Volume Air Flow Circuit Low Input
- P0103: Mass or Volume Air Flow Circuit High Input
- P0104: Mass or Volume Air Flow Circuit Intermittent
P0105 – P0109: Manifold Absolute Pressure (MAP)/Barometric Pressure Circuit
- P0105: Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
- P0106: Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
- P0107: Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- P0108: Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- P0109: Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
P0110 – P0114: Intake Air Temperature (IAT) Circuit
- P0110: Intake Air Temperature Circuit Malfunction
- P0111: Intake Air Temperature Circuit Range/Performance Problem
- P0112: Intake Air Temperature Circuit Low Input
- P0113: Intake Air Temperature Circuit High Input
- P0114: Intake Air Temperature Circuit Intermittent
P0115 – P0119: Engine Coolant Temperature (ECT) Circuit
- P0115: Engine Coolant Temperature Circuit Malfunction
- P0116: Engine Coolant Temperature Circuit Range/Performance Problem
- P0117: Engine Coolant Temperature Circuit Low Input
- P0118: Engine Coolant Temperature Circuit High Input
- P0119: Engine Coolant Temperature Circuit Intermittent
P0120 – P0124: Throttle/Pedal Position Sensor/Switch “A” Circuit
- P0120: Throttle/Pedal Position Sensor/Switch “A” Circuit Malfunction
- P0121: Throttle/Pedal Position Sensor/Switch “A” Circuit Range/Performance Problem
- P0122: Throttle/Pedal Position Sensor/Switch “A” Circuit Low Input
- P0123: Throttle/Pedal Position Sensor/Switch “A” Circuit High Input
- P0124: Throttle/Pedal Position Sensor/Switch “A” Circuit Intermittent
P0125 – P0126: Coolant Temperature Related
- P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- P0126: Insufficient Coolant Temperature For Stable Operation
P0130 – P0147: O2 Sensor Circuit (Bank 1)
- P0130: O2 Circuit Malfunction (Bank 1 Sensor 1)
- P0131: O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- P0132: O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
- P0133: O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
- P0134: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- P0135: O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0136: O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
- P0137: O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
- P0138: O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
- P0139: O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
- P0140: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
- P0141: O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
- P0142: O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
- P0143: O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
- P0144: O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
- P0145: O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
- P0146: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
- P0147: O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0150 – P0167: O2 Sensor Circuit (Bank 2)
- P0150: O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
- P0151: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
- P0152: O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
- P0153: O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
- P0154: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
- P0155: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
- P0156: O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
- P0157: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
- P0158: O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
- P0159: O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
- P0160: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
- P0161: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
- P0162: O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
- P0163: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
- P0164: O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
- P0165: O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
- P0166: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
- P0167: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
P0170 – P0175: Fuel Trim and System Lean/Rich (Bank 1 & 2)
- P0170: Fuel Trim Malfunction (Bank 1)
- P0171: System Too Lean (Bank 1)
- P0172: System Too Rich (Bank 1)
- P0173: Fuel Trim Malfunction (Bank 2)
- P0174: System Too Lean (Bank 2)
- P0175: System Too Rich (Bank 2)
P0176 – P0179: Fuel Composition Sensor Circuit
- P0176: Fuel Composition Sensor Circuit Malfunction
- P0177: Fuel Composition Sensor Circuit Range/Performance
- P0178: Fuel Composition Sensor Circuit Low Input
- P0179: Fuel Composition Sensor Circuit High Input
P0180 – P0184: Fuel Temperature Sensor “A” Circuit
- P0180: Fuel Temperature Sensor “A” Circuit Malfunction
- P0181: Fuel Temperature Sensor “A” Circuit Range/Performance
- P0182: Fuel Temperature Sensor “A” Circuit Low Input
- P0183: Fuel Temperature Sensor “A” Circuit High Input
- P0184: Fuel Temperature Sensor “A” Circuit Intermittent
P0185 – P0189: Fuel Temperature Sensor “B” Circuit
- P0185: Fuel Temperature Sensor “B” Circuit Malfunction
- P0186: Fuel Temperature Sensor “B” Circuit Range/Performance
- P0187: Fuel Temperature Sensor “B” Circuit Low Input
- P0188: Fuel Temperature Sensor “B” Circuit High Input
- P0189: Fuel Temperature Sensor “B” Circuit Intermittent
P0190 – P0194: Fuel Rail Pressure Sensor Circuit
- P0190: Fuel Rail Pressure Sensor Circuit Malfunction
- P0191: Fuel Rail Pressure Sensor Circuit Range/Performance
- P0192: Fuel Rail Pressure Sensor Circuit Low Input
- P0193: Fuel Rail Pressure Sensor Circuit High Input
- P0194: Fuel Rail Pressure Sensor Circuit Intermittent
P0195 – P0199: Engine Oil Temperature Sensor
- P0195: Engine Oil Temperature Sensor Malfunction
- P0196: Engine Oil Temperature Sensor Range/Performance
- P0197: Engine Oil Temperature Sensor Low
- P0198: Engine Oil Temperature Sensor High
- P0199: Engine Oil Temperature Sensor Intermittent
P0200 – P0214: Injector Circuit Malfunction
- P0200: Injector Circuit Malfunction
- P0201: Injector Circuit Malfunction — Cylinder #1
- P0202: Injector Circuit Malfunction — Cylinder #2
- P0203: Injector Circuit Malfunction — Cylinder #3
- P0204: Injector Circuit Malfunction — Cylinder #4
- P0205: Injector Circuit Malfunction — Cylinder #5
- P0206: Injector Circuit Malfunction — Cylinder #6
- P0207: Injector Circuit Malfunction — Cylinder #7
- P0208: Injector Circuit Malfunction — Cylinder #8
- P0209: Injector Circuit Malfunction — Cylinder #9
- P0210: Injector Circuit Malfunction — Cylinder #10
- P0211: Injector Circuit Malfunction — Cylinder #11
- P0212: Injector Circuit Malfunction — Cylinder #12
- P0213: Cold Start Injector #1 Malfunction
- P0214: Cold Start Injector #2 Malfunction
P0215 – P0219: Engine Control and Over Temperature/Speed
- P0215: Engine Shutoff Solenoid Malfunction
- P0216: Injection Timing Control Circuit Malfunction
- P0217: Engine Over Temperature Condition
- P0218: Transmission Over Temperature Condition
- P0219: Engine Over Speed Condition
P0220 – P0224: Throttle/Pedal Position Sensor/Switch “B” Circuit
- P0220: Throttle/Pedal Position Sensor/Switch “B” Circuit Malfunction
- P0221: Throttle/Pedal Position Sensor/Switch “B” Circuit Range/Performance Problem
- P0222: Throttle/Pedal Position Sensor/Switch “B” Circuit Low Input
- P0223: Throttle/Pedal Position Sensor/Switch “B” Circuit High Input
- P0224: Throttle/Pedal Position Sensor/Switch “B” Circuit Intermittent
P0225 – P0229: Throttle/Pedal Position Sensor/Switch “C” Circuit
- P0225: Throttle/Pedal Position Sensor/Switch “C” Circuit Malfunction
- P0226: Throttle/Pedal Position Sensor/Switch “C” Circuit Range/Performance Problem
- P0227: Throttle/Pedal Position Sensor/Switch “C” Circuit Low Input
- P0228: Throttle/Pedal Position Sensor/Switch “C” Circuit High Input
- P0229: Throttle/Pedal Position Sensor/Switch “C” Circuit Intermittent
P0230 – P0233: Fuel Pump Primary/Secondary Circuit
- P0230: Fuel Pump Primary Circuit Malfunction
- P0231: Fuel Pump Secondary Circuit Low
- P0232: Fuel Pump Secondary Circuit High
- P0233: Fuel Pump Secondary Circuit Intermittent
P0234: Engine Over Boost Condition
- P0234: Engine Over Boost Condition
P0261 – P0296: Cylinder Injector Circuit Low/High and Contribution/Balance Fault (Cylinders 1-12)
- P0261 – P0262: Cylinder #1 Injector Circuit Low/High
- P0263: Cylinder #1 Contribution/Balance Fault
- P0264 – P0265: Cylinder #2 Injector Circuit Low/High
- P0266: Cylinder #2 Contribution/Balance Fault
- P0267 – P0268: Cylinder #3 Injector Circuit Low/High
- P0269: Cylinder #3 Contribution/Balance Fault
- P0270 – P0271: Cylinder #4 Injector Circuit Low/High
- P0272: Cylinder #4 Contribution/Balance Fault
- P0273 – P0274: Cylinder #5 Injector Circuit Low/High
- P0275: Cylinder #5 Contribution/Balance Fault
- P0276 – P0277: Cylinder #6 Injector Circuit Low/High
- P0278: Cylinder #6 Contribution/Balance Fault
- P0279 – P0280: Cylinder #7 Injector Circuit Low/High
- P0281: Cylinder #7 Contribution/Balance Fault
- P0282 – P0283: Cylinder #8 Injector Circuit Low/High
- P0284: Cylinder #8 Contribution/Balance Fault
- P0285 – P0286: Cylinder #9 Injector Circuit Low/High
- P0287: Cylinder #9 Contribution/Balance Fault
- P0288 – P0289: Cylinder #10 Injector Circuit Low/High
- P0290: Cylinder #10 Contribution/Balance Fault
- P0291 – P0292: Cylinder #11 Injector Circuit Low/High
- P0293: Cylinder #11 Contribution/Balance Fault
- P0294 – P0295: Cylinder #12 Injector Circuit Low/High
- P0296: Cylinder #12 Contribution/Balance Fault
P0300 – P0308: Cylinder Misfire Detected
- P0300: Random/Multiple Cylinder Misfire Detected
- P0301: Cylinder #1 — Misfire Detected
- P0302: Cylinder #2 — Misfire Detected
- P0303: Cylinder #3 — Misfire Detected
- P0304: Cylinder #4 — Misfire Detected
- P0305: Cylinder #5 — Misfire Detected
- P0306: Cylinder #6 — Misfire Detected
- P0307: Cylinder #7 — Misfire Detected
- P0308: Cylinder #8 — Misfire Detected
P0320 – P0323: Ignition/Distributor Engine Speed Input Circuit
- P0320: Ignition/Distributor Engine Speed Input Circuit Malfunction
- P0321: Ignition/Distributor Engine Speed Input Circuit Range/Performance
- P0322: Ignition/Distributor Engine Speed Input Circuit No Signal
- P0323: Ignition/Distributor Engine Speed Input Circuit Intermittent
P0325 – P0329: Knock Sensor #1 Circuit (Bank 1 or Single Sensor)
- P0325: Knock Sensor #1 — Circuit Malfunction (Bank 1 or Single Sensor)
- P0326: Knock Sensor #1 — Circuit Range/Performance (Bank 1 or Single Sensor)
- P0327: Knock Sensor #1 — Circuit Low Input (Bank 1 or Single Sensor)
- P0328: Knock Sensor #1 — Circuit High Input (Bank 1 or Single Sensor)
- P0329: Knock Sensor #1 — Circuit Input Intermittent (Bank 1 or Single Sensor)
P0330 – P0334: Knock Sensor #2 Circuit (Bank 2)
- P0330: Knock Sensor #2 — Circuit Malfunction (Bank 2)
- P0331: Knock Sensor #2 — Circuit Range/Performance (Bank 2)
- P0332: Knock Sensor #2 — Circuit Low Input (Bank 2)
- P0333: Knock Sensor #2 — Circuit High Input (Bank 2)
- P0334: Knock Sensor #2 — Circuit Input Intermittent (Bank 2)
P0335 – P0339: Crankshaft Position Sensor “A” Circuit
- P0335: Crankshaft Position Sensor “A” Circuit Malfunction
- P0336: Crankshaft Position Sensor “A” Circuit Range/Performance
- P0337: Crankshaft Position Sensor “A” Circuit Low Input
- P0338: Crankshaft Position Sensor “A” Circuit High Input
- P0339: Crankshaft Position Sensor “A” Circuit Intermittent
P0340 – P0344: Camshaft Position Sensor Circuit
- P0340: Camshaft Position Sensor Circuit Malfunction
- P0341: Camshaft Position Sensor Circuit Range/Performance
- P0342: Camshaft Position Sensor Circuit Low Input
- P0343: Camshaft Position Sensor Circuit High Input
- P0344: Camshaft Position Sensor Circuit Intermittent
P0350 – P0362: Ignition Coil Primary/Secondary Circuit Malfunction
- P0350: Ignition Coil Primary/Secondary Circuit Malfunction
- P0351: Ignition Coil “A” Primary/Secondary Circuit Malfunction
- P0352: Ignition Coil “B” Primary/Secondary Circuit Malfunction
- P0353: Ignition Coil “C” Primary/Secondary Circuit Malfunction
- P0354: Ignition Coil “D” Primary/Secondary Circuit Malfunction
- P0355: Ignition Coil “E” Primary/Secondary Circuit Malfunction
- P0356: Ignition Coil “F” Primary/Secondary Circuit Malfunction
- P0357: Ignition Coil “G” Primary/Secondary Circuit Malfunction
- P0358: Ignition Coil “H” Primary/Secondary Circuit Malfunction
- P0359: Ignition Coil “I” Primary/Secondary Circuit Malfunction
- P0360: Ignition Coil “J” Primary/Secondary Circuit Malfunction
- P0361: Ignition Coil “K” Primary/Secondary Circuit Malfunction
- P0362: Ignition Coil “L” Primary/Secondary Circuit Malfunction
P0370 – P0379: Timing Reference High Resolution Signal “A” & “B” Malfunction
- P0370: Timing Reference High Resolution Signal “A” Malfunction
- P0371: Timing Reference High Resolution Signal “A” Too Many Pulses
- P0372: Timing Reference High Resolution Signal “A” Too Few Pulses
- P0373: Timing Reference High Resolution Signal “A” Intermittent/Erratic Pulses
- P0374: Timing Reference High Resolution Signal “A” No Pulses
- P0375: Timing Reference High Resolution Signal “B” Malfunction
- P0376: Timing Reference High Resolution Signal “B” Too Many Pulses
- P0377: Timing Reference High Resolution Signal “B” Too Few Pulses
- P0378: Timing Reference High Resolution Signal “B” Intermittent/Erratic Pulses
- P0379: Timing Reference High Resolution Signal “B” No Pulses
P0380 – P0382: Glow Plug/Heater Circuit “A” & “B” Malfunction
- P0380: Glow Plug/Heater Circuit “A” Malfunction
- P0381: Glow Plug/Heater Indicator Circuit Malfunction
- P0382: Glow Plug/Heater Circuit “B” Malfunction
P0385 – P0389: Crankshaft Position Sensor “B” Circuit
- P0385: Crankshaft Position Sensor “B” Circuit Malfunction
- P0386: Crankshaft Position Sensor “B” Circuit Range/Performance
- P0387: Crankshaft Position Sensor “B” Circuit Low Input
- P0388: Crankshaft Position Sensor “B” Circuit High Input
- P0389: Crankshaft Position Sensor “B” Circuit Intermittent
P0400 – P0408: Exhaust Gas Recirculation (EGR) System
- P0400: Exhaust Gas Recirculation Flow Malfunction
- P0401: Exhaust Gas Recirculation Flow Insufficient Detected
- P0402: Exhaust Gas Recirculation Flow Excessive Detected
- P0403: Exhaust Gas Recirculation Circuit Malfunction
- P0404: Exhaust Gas Recirculation Circuit Range/Performance
- P0405: Exhaust Gas Recirculation Sensor “A” Circuit Low
- P0406: Exhaust Gas Recirculation Sensor “A” Circuit High
- P0407: Exhaust Gas Recirculation Sensor “B” Circuit Low
- P0408: Exhaust Gas Recirculation Sensor “B” Circuit High
P0410 – P0419: Secondary Air Injection System
- P0410: Secondary Air Injection System Malfunction
- P0411: Secondary Air Injection System Incorrect Flow Detected
- P0412: Secondary Air Injection System Switching Valve “A” Circuit Malfunction
- P0413: Secondary Air Injection System Switching Valve “A” Circuit Open
- P0414: Secondary Air Injection System Switching Valve “A” Circuit Shorted
- P0415: Secondary Air Injection System Switching Valve “B” Circuit Malfunction
- P0416: Secondary Air Injection System Switching Valve “B” Circuit Open
- P0417: Secondary Air Injection System Switching Valve “B” Circuit Shorted
- P0418: Secondary Air Injection System Relay “A” Circuit Malfunction
- P0419: Secondary Air Injection System Relay “B” Circuit Malfunction
P0420 – P0434: Catalyst System Efficiency Below Threshold (Bank 1 & 2)
- P0420: Catalyst System Efficiency Below Threshold (Bank 1)
- P0421: Warm Up Catalyst Efficiency Below Threshold (Bank 1)
- P0422: Main Catalyst Efficiency Below Threshold (Bank 1)
- P0423: Heated Catalyst Efficiency Below Threshold (Bank 1)
- P0424: Heated Catalyst Temperature Below Threshold (Bank 1)
- P0430: Catalyst System Efficiency Below Threshold (Bank 2)
- P0431: Warm Up Catalyst Efficiency Below Threshold (Bank 2)
- P0432: Main Catalyst Efficiency Below Threshold (Bank 2)
- P0433: Heated Catalyst Efficiency Below Threshold (Bank 2)
- P0434: Heated Catalyst Temperature Below Threshold (Bank 2)
P0440 – P0449: Evaporative Emission Control System (EVAP)
- P0440: Evaporative Emission Control System Malfunction
- P0441: Evaporative Emission Control System Incorrect Purge Flow
- P0442: Evaporative Emission Control System Leak Detected (Small Leak)
- P0443: Evaporative Emission Control System Purge Control Valve Circuit Malfunction
- P0444: Evaporative Emission Control System Purge Control Valve Circuit Open
- P0445: Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0446: Evaporative Emission Control System Vent Control Circuit Malfunction
- P0447: Evaporative Emission Control System Vent Control Circuit Open
- P0448: Evaporative Emission Control System Vent Control Circuit Shorted
- P0449: Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
P0450 – P0455: Evaporative Emission Control System Pressure Sensor
- P0450: Evaporative Emission Control System Pressure Sensor Malfunction
- P0451: Evaporative Emission Control System Pressure Sensor Range/Performance
- P0452: Evaporative Emission Control System Pressure Sensor Low Input
- P0453: Evaporative Emission Control System Pressure Sensor High Input
- P0454: Evaporative Emission Control System Pressure Sensor Intermittent
- P0455: Evaporative Emission Control System Leak Detected (Gross Leak)
P0460 – P0464: Fuel Level Sensor Circuit
- P0460: Fuel Level Sensor Circuit Malfunction
- P0461: Fuel Level Sensor Circuit Range/Performance
- P0462: Fuel Level Sensor Circuit Low Input
- P0463: Fuel Level Sensor Circuit High Input
- P0464: Fuel Level Sensor Circuit Intermittent
P0465 – P0469: Purge Flow Sensor Circuit
- P0465: Purge Flow Sensor Circuit Malfunction
- P0466: Purge Flow Sensor Circuit Range/Performance
- P0467: Purge Flow Sensor Circuit Low Input
- P0468: Purge Flow Sensor Circuit High Input
- P0469: Purge Flow Sensor Circuit Intermittent
P0470 – P0474: Exhaust Pressure Sensor
- P0470: Exhaust Pressure Sensor Malfunction
- P0471: Exhaust Pressure Sensor Range/Performance
- P0472: Exhaust Pressure Sensor Low
- P0473: Exhaust Pressure Sensor High
- P0474: Exhaust Pressure Sensor Intermittent
P0475 – P0479: Exhaust Pressure Control Valve
- P0475: Exhaust Pressure Control Valve Malfunction
- P0476: Exhaust Pressure Control Valve Range/Performance
- P0477: Exhaust Pressure Control Valve Low
- P0478: Exhaust Pressure Control Valve High
- P0479: Exhaust Pressure Control Valve Intermittent
P0480 – P0485: Cooling Fan Control Circuit
- P0480: Cooling Fan #1 Control Circuit Malfunction
- P0481: Cooling Fan #2 Control Circuit Malfunction
- P0482: Cooling Fan #3 Control Circuit Malfunction
- P0483: Cooling Fan Rationality Check Malfunction
- P0484: Cooling Fan Circuit Over Current
- P0485: Cooling Fan Power/Ground Circuit Malfunction
P0500 – P0503: Vehicle Speed Sensor (VSS)
- P0500: Vehicle Speed Sensor Malfunction
- P0501: Vehicle Speed Sensor Range/Performance
- P0502: Vehicle Speed Sensor Circuit Low Input
- P0503: Vehicle Speed Sensor Intermittent/Erratic/High
P0505 – P0507: Idle Control System
- P0505: Idle Control System Malfunction
- P0506: Idle Control System RPM Lower Than Expected
- P0507: Idle Control System RPM Higher Than Expected
P0510: Closed Throttle Position Switch Malfunction
- P0510: Closed Throttle Position Switch Malfunction
P0520 – P0523: Engine Oil Pressure Sensor/Switch Circuit
- P0520: Engine Oil Pressure Sensor/Switch Circuit Malfunction
- P0521: Engine Oil Pressure Sensor/Switch Range/Performance
- P0522: Engine Oil Pressure Sensor/Switch Low Voltage
- P0523: Engine Oil Pressure Sensor/Switch High Voltage
P0530 – P0534: A/C Refrigerant Pressure Sensor Circuit
- P0530: A/C Refrigerant Pressure Sensor Circuit Malfunction
- P0531: A/C Refrigerant Pressure Sensor Circuit Range/Performance
- P0532: A/C Refrigerant Pressure Sensor Circuit Low Input
- P0533: A/C Refrigerant Pressure Sensor Circuit High Input
- P0534: A/C Refrigerant Charge Loss
P0550 – P0554: Power Steering Pressure Sensor Circuit
- P0550: Power Steering Pressure Sensor Circuit Malfunction
- P0551: Power Steering Pressure Sensor Circuit Range/Performance
- P0552: Power Steering Pressure Sensor Circuit Low Input
- P0553: Power Steering Pressure Sensor Circuit High Input
- P0554: Power Steering Pressure Sensor Circuit Intermittent
P0560 – P0563: System Voltage
- P0560: System Voltage Malfunction
- P0561: System Voltage Unstable
- P0562: System Voltage Low
- P0563: System Voltage High
P0565 – P0570: Cruise Control Signals
- P0565: Cruise Control On Signal Malfunction
- P0566: Cruise Control Off Signal Malfunction
- P0567: Cruise Control Resume Signal Malfunction
- P0568: Cruise Control Set Signal Malfunction
- P0569: Cruise Control Coast Signal Malfunction
- P0570: Cruise Control Accel Signal Malfunction
P0571 – P0573: Cruise Control/Brake Switch “A” Circuit
- P0571: Cruise Control/Brake Switch “A” Circuit Malfunction
- P0572: Cruise Control/Brake Switch “A” Circuit Low
- P0573: Cruise Control/Brake Switch “A” Circuit High
P0600 – P0609: Control Module Communication and Memory Errors
- P0600: Serial Communication Link Malfunction
- P0601: Internal Control Module Memory Check Sum Error
- P0602: Control Module Programming Error
- P0603: Internal Control Module Keep Alive Memory (KAM) Error
- P0604: Internal Control Module Random Access Memory (RAM) Error
- P0605: Internal Control Module Read Only Memory (ROM) Error
- P0606: PCM Processor Fault
- P0608: Control Module VSS Output “A” Malfunction
- P0609: Control Module VSS Output “B” Malfunction
P0620 – P0622: Generator Control Circuit
- P0620: Generator Control Circuit Malfunction
- P0621: Generator Lamp “L” Control Circuit Malfunction
- P0622: Generator Field “F” Control Circuit Malfunction
P0650 – P0656: Output Circuit Malfunctions
- P0650: Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
- P0654: Engine RPM Output Circuit Malfunction
- P0655: Engine Hot Lamp Output Control Circuit Malfunction
- P0656: Fuel Level Output Circuit Malfunction
P0700 – P0709: Transmission Control System & Range Sensor
- P0700: Transmission Control System Malfunction
- P0701: Transmission Control System Range/Performance
- P0702: Transmission Control System Electrical
- P0703: Torque Converter/Brake Switch “B” Circuit Malfunction
- P0704: Clutch Switch Input Circuit Malfunction
- P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)
- P0706: Transmission Range Sensor Circuit Range/Performance
- P0707: Transmission Range Sensor Circuit Low Input
- P0708: Transmission Range Sensor Circuit High Input
- P0709: Transmission Range Sensor Circuit Intermittent
P0710 – P0714: Transmission Fluid Temperature Sensor Circuit
- P0710: Transmission Fluid Temperature Sensor Circuit Malfunction
- P0711: Transmission Fluid Temperature Sensor Circuit Range/Performance
- P0712: Transmission Fluid Temperature Sensor Circuit Low Input
- P0713: Transmission Fluid Temperature Sensor Circuit High Input
- P0714: Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 – P0718: Input/Turbine Speed Sensor Circuit
- P0715: Input/Turbine Speed Sensor Circuit Malfunction
- P0716: Input/Turbine Speed Sensor Circuit Range/Performance
- P0717: Input/Turbine Speed Sensor Circuit No Signal
- P0718: Input/Turbine Speed Sensor Circuit Intermittent
P0719 – P0724: Torque Converter/Brake Switch “B” Circuit & Output Speed Sensor Circuit
- P0719: Torque Converter/Brake Switch “B” Circuit Low
- P0720: Output Speed Sensor Circuit Malfunction
- P0721: Output Speed Sensor Circuit Range/Performance
- P0722: Output Speed Sensor Circuit No Signal
- P0723: Output Speed Sensor Circuit Intermittent
- P0724: Torque Converter/Brake Switch “B” Circuit High
P0725 – P0728: Engine Speed Input Circuit
- P0725: Engine Speed Input Circuit Malfunction
- P0726: Engine Speed Input Circuit Range/Performance
- P0727: Engine Speed Input Circuit No Signal
- P0728: Engine Speed Input Circuit Intermittent
P0730 – P0736: Incorrect Gear Ratio
- P0730: Incorrect Gear Ratio
- P0731: Gear #1 Incorrect Ratio
- P0732: Gear #2 Incorrect Ratio
- P0733: Gear #3 Incorrect Ratio
- P0734: Gear #4 Incorrect Ratio
- P0735: Gear #5 Incorrect Ratio
- P0736: Reverse Incorrect Ratio
P0740 – P0744: Torque Converter Clutch Circuit
- P0740: Torque Converter Clutch Circuit Malfunction
- P0741: Torque Converter Clutch Circuit Performance or Stuck Off
- P0742: Torque Converter Clutch Circuit Stuck On
- P0743: Torque Converter Clutch Circuit Electrical
- P0744: Torque Converter Clutch Circuit Intermittent
P0745 – P0749: Pressure Control Solenoid Malfunction
- P0745: Pressure Control Solenoid Malfunction
- P0746: Pressure Control Solenoid Performance or Stuck Off
- P0747: Pressure Control Solenoid Stuck On
- P0748: Pressure Control Solenoid Electrical
- P0749: Pressure Control Solenoid Intermittent
P0750 – P0754: Shift Solenoid “A” Malfunction
- P0750: Shift Solenoid “A” Malfunction
- P0751: Shift Solenoid “A” Performance or Stuck Off
- P0752: Shift Solenoid “A” Stuck On
- P0753: Shift Solenoid “A” Electrical
- P0754: Shift Solenoid “A” Intermittent
P0755 – P0759: Shift Solenoid “B” Malfunction
- P0755: Shift Solenoid “B” Malfunction
- P0756: Shift Solenoid “B” Performance or Stuck Off
- P0757: Shift Solenoid “B” Stuck On
- P0758: Shift Solenoid “B” Electrical
- P0759: Shift Solenoid “B” Intermittent
P0760 – P0764: Shift Solenoid “C” Malfunction
- P0760: Shift Solenoid “C” Malfunction
- P0761: Shift Solenoid “C” Performance Or Stuck Off
- P0762: Shift Solenoid “C” Stuck On
- P0763: Shift Solenoid “C” Electrical
- P0764: Shift Solenoid “C” Intermittent
P0765 – P0769: Shift Solenoid “D” Malfunction
- P0765: Shift Solenoid “D” Malfunction
- P0766: Shift Solenoid “D” Performance Or Stuck Off
- P0767: Shift Solenoid “D” Stuck On
- P0768: Shift Solenoid “D” Electrical
- P0769: Shift Solenoid “D” Intermittent
P0770 – P0774: Shift Solenoid “E” Malfunction
- P0770: Shift Solenoid “E” Malfunction
- P0771: Shift Solenoid “E” Performance Or Stuck Off
- P0772: Shift Solenoid “E” Stuck On
- P0773: Shift Solenoid “E” Electrical
- P0774: Shift Solenoid “E” Intermittent
P0780 – P0784: Shift Malfunction (1-2 to 4-5)
- P0780: Shift Malfunction
- P0781: 1–2 Shift Malfunction
- P0782: 2–3 Shift Malfunction
- P0783: 3–4 Shift Malfunction
- P0784: 4–5 Shift Malfunction
P0785 – P0789: Shift/Timing Solenoid Malfunction
- P0785: Shift/Timing Solenoid Malfunction
- P0786: Shift/Timing Solenoid Range/Performance
- P0787: Shift/Timing Solenoid Low
- P0788: Shift/Timing Solenoid High
- P0789: Shift/Timing Solenoid Intermittent
P0790: Normal/Performance Switch Circuit Malfunction
- P0790: Normal/Performance Switch Circuit Malfunction
P0801 – P0804: Reverse Inhibit & 1-4 Upshift (Skip Shift) Control Circuit Malfunction
- P0801: Reverse Inhibit Control Circuit Malfunction
- P0803: 1–4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
- P0804: 1–4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
Toyota Specific OBD-II Codes (P1xxx)
These P1xxx codes are specific to Toyota vehicles and often relate to systems and components unique to the manufacturer’s design and engineering.
P1100: Barometric Pressure Sensor Circuit Fault
- P1100: Barometric Pressure Sensor Circuit Fault
P1120 – P1121: Accelerator Pedal Position Sensor Circuit
- P1120: Accelerator Pedal Position Sensor Circuit Malfunction
- P1121: Accelerator Pedal Position Sensor Range/Performance Problem
P1125 – P1129: Throttle Control & Electric Throttle Control System
- P1125: Throttle Control Motor Circuit Malfunction
- P1126: Magnetic Clutch Circuit Malfunction
- P1127: ETCS Actuator Power Source Circuit Malfunction
- P1128: Throttle Control Motor Lock Malfunction
- P1129: Electric Throttle Control System Malfunction
P1130 – P1135: Air Fuel (A/F) Sensor Circuit (Bank 1 Sensor 1)
- P1130: A/F Sensor Circuit Range / Performance Malfunction (Bank 1 Sensor 1)
- P1133: A/F Sensor Circuit Response Malfunction (Bank 1 Sensor 1)
- P1135: A/F Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P1150 – P1155: Air Fuel (A/F) Sensor Circuit (Bank 2 Sensor 1)
- P1150: A/F Sensor Circuit Range / Performance Malfunction (Bank 2 Sensor 1)
- P1153: A/F Sensor Circuit Response Malfunction (Bank 2 Sensor 1)
- P1155: A/F Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P1200: Fuel Pump Relay Circuit Fault
- P1200: Fuel Pump Relay Circuit Fault
P1300 – P1340: Igniter Circuit Fault (Banks 1-8)
- P1300: Igniter Circuit Fault (Bank 1)
- P1305: Igniter Circuit Fault (Bank 2)
- P1310: Igniter Circuit Fault (Bank 3)
- P1315: Igniter Circuit Fault (Bank 4)
- P1320: Igniter Circuit Fault (Bank 5)
- P1325: Igniter Circuit Fault (Bank 6)
- P1330: Igniter Circuit Fault (Bank 7)
- P1335: Crankshaft Position Sensor Circuit Fault (during engine running)
- P1340: Igniter Circuit Fault (Bank 8)
P1400 – P1401: Sub-Throttle Position Sensor Circuit
- P1400: Sub-Throttle Position Sensor Circuit Fault
- P1401: Sub-Throttle Position Sensor Performance
P1500: Starter Signal Circuit Fault
- P1500: Starter Signal Circuit Fault
P1510: Air Volume Too Low With Supercharger On
- P1510: Air Volume Too Low With Supercharger On
P1520: Stop Light Switch Signal Malfunction
- P1520: Stop Light Switch Signal Malfunction
P1600 – P1633: ECM (Engine Control Module) Faults
- P1600: ECM Battery Back-up Circuit Fault
- P1633: ECM Malfunction (ETCS Circuit)
- P1605: Knock Control CPU Fault
P1700: Vehicle Speed Sensor Circuit Fault
- P1700: Vehicle Speed Sensor Circuit Fault
P1705: Direct Clutch Speed Sensor Circuit Fault
- P1705: Direct Clutch Speed Sensor Circuit Fault
P1765: Linear Shift Solenoid Circuit Fault
- P1765: Linear Shift Solenoid Circuit Fault
P1780: Park Neutral Position Switch Fault
- P1780: Park Neutral Position Switch Fault
This list provides a solid foundation for understanding Toyota OBD2 fault codes. When you encounter a check engine light and retrieve a code, consult this list to get an initial idea of the potential issue.
Important Note: While this list is comprehensive, diagnosing car problems can be complex. Always refer to your Toyota’s service manual and consult with a qualified automotive technician for accurate diagnosis and repair. Using an OBD2 scanner is a helpful tool, but professional expertise is crucial for resolving vehicle issues effectively and safely.
