OBD-II code · Powertrain (generic)
P05CB Vehicle Hardware Incompatibility
The ECU detects that one or more connected modules report a hardware variant or part number that is not compatible with the current ECU calibration. Typically appears after replacing a part with the wrong revision or after a software update without matching hardware.
Is it safe to drive with P05CB?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyReplacement part has wrong revision
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Vehicle Configuration, Hardware Variant
Related codes
- P05C8Economy Mode Switch Circuit Range or Performance
- P05C9Economy Mode Switch Circuit Low
- P05CAEconomy Mode Switch Circuit High
- P05CCCold Start A Camshaft Position Timing Performance Bank 1
- P05CDCold Start A Camshaft Position Timing Performance Bank 2
- P05CECold Start B Camshaft Position Timing Performance Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.