The Actron CP9185 OBD2 scanner is marketed as a versatile handheld tool for both OBD2 and some OBD1 vehicle diagnostics. Having put this scanner through its paces, this review dives into its features, capabilities, and overall value, especially for those considering it for their automotive diagnostic needs.
Initial Impressions and What’s in the Box
The Actron CP9185 arrives with a practical soft case, a user manual, a USB cable, a main diagnostic cable, and a short OBD2 (16-pin) adapter cable. While my package was missing the software CD, which ideally should contain the full user manual and PC connectivity software, this might be an isolated issue or indicate a move towards online downloads. Purchased directly from Amazon at a competitive $175 initially, the price quickly fluctuated upwards to $259 and beyond from other sellers, even reaching Actron’s direct price of $398 plus shipping. It’s worth noting that prices can vary significantly, and deals like the initial Amazon price or mentions of $150 at retailers like Advance Auto Parts can sometimes be found.
The scanner itself features a power button, though the display backlight only activates when connected to an external 12V power source, either from a vehicle’s OBD2 port or a DC adapter. This is a crucial point, especially for OBD1 diagnostics, as these older systems typically don’t supply power through the data link connector (DLC).
OBD1 Diagnostic Capabilities: A Strong Point
To test the OBD1 capabilities, the CP9127 OBD1 adapter cable kit (sold separately for around $35) was used. This kit includes a 12-pin adapter and a cigarette lighter power adapter. For 1995 F-body vehicles, the standard 16-pin OBD2 cable is compatible. However, for older 1994 models, the CP9127 or a custom-made adapter cable (15-pin Actron to 12-pin DLC) is necessary. A 12V AC adapter is also required for 1994 vehicles.
The OBD1 functionality proved to be a notable strength. Testing on 1994/95 LT1, 1994/95 L34, and 1986 5.0L carbureted F-body cars, the scanner performed admirably. It provided at least three screens of live engine data, along with current and historical Diagnostic Trouble Codes (DTCs) for each vehicle. The field service mode, activated via a dedicated pin on the DLC, also functioned correctly with the OBD1 cable. It’s worth mentioning that for 1995 OBD1 vehicles using the OBD2 cable, the field service mode might not work due to pin configuration changes for CAN signals.
OBD2 Performance: Lacking Advanced Features
Unfortunately, the OBD2 functionality of the Actron CP9185 is less impressive. In testing, its OBD2 capabilities were found to be comparable to much cheaper, basic OBD2 code readers like the Autel Maxiscan MS310. These budget-friendly tools offer nearly the same OBD2 features as the CP9185, making it less compelling for OBD2 diagnostics alone. For comprehensive OBD2 software, options like OBDWiz, often bundled with affordable ELMScan-5 Compact adapters, provide a more feature-rich experience at a lower overall cost.
Limited Extra Functions
The Actron CP9185 lacks support for advanced systems like ABS (Anti-lock Braking System) or SRS (Supplemental Restraint System) modules. It also doesn’t offer actuator tests, which are valuable for pinpointing specific component issues. Graphing capabilities are present for some OBD2 parameters, but the resolution is low, and graphs cannot be paused for detailed examination. The advertised “rewind” feature for graphs was not found to be functional. OBD1 parameters do not have graphing support at all.
Data logging is available for both OBD1 and OBD2, but the recording time is very limited, often under 20 seconds, and the data update rate is slow. While PC connectivity exists for data transfer, it’s restricted to exporting logged data in a simple text format, limiting in-depth data analysis.
Pros & Cons
Pros:
- Good OBD1 diagnostic capabilities, including live data and DTCs.
- Functional field service mode for OBD1 with correct adapter.
- Portable handheld design.
- Included accessories (case, cables).
Cons:
- Disappointing OBD2 functionality, comparable to cheaper basic scanners.
- No ABS/SRS module support or actuator tests.
- Limited and low-resolution graphing (OBD2 only, no pause/rewind).
- Short data logging time and slow update rate.
- Basic PC interface with limited functionality.
- Price point is high for its OBD2 capabilities.
Recommendation
The Actron CP9185 OBD2 scanner is primarily recommended for users who specifically require a handheld tool for diagnosing older OBD1 vehicles. Its OBD1 capabilities are its strongest feature. However, for OBD2 diagnostics, it offers little advantage over significantly less expensive basic code readers. If your focus is primarily OBD2 and you desire more advanced features, or even just comparable functionality at a better price, exploring alternative OBD2 scanners would be advisable. For comprehensive OBD2 diagnostics, consider PC-based software and adapters which often provide more in-depth analysis and features for a lower overall investment.
