OBD-II code · Powertrain (generic)
P0CA1 Drive Motor Control Module Requested MIL Illumination
The drive motor control module has requested MIL illumination via the inter-module bus. Underlying fault is reported separately.
Is it safe to drive with P0CA1?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDownstream fault in drive motor system
- PossibleCommunication lag
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor Control Module, Module Communication Bus
Related codes
- P0C9E14 Volt Power Module Current Sensor B Circuit Low
- P0C9F14 Volt Power Module Current Sensor B Circuit High
- P0CA014 Volt Power Module Current Sensor B Circuit Intermittent
- P0CA2DC/DC Converter Step Down Voltage Performance
- P0CA3DC/DC Converter Step Up Voltage Performance
- P0CA4Hybrid/EV Battery Charging Voltage High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.