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.
The drive motor control module has requested MIL illumination via the inter-module bus. Underlying fault is reported separately.
Common causes
- high
Downstream fault in drive motor system
One of the most commonly reported causes for this code — check this first.
Typical part cost: $110-550
- medium
Communication lag
A plausible cause — test and verify before replacing parts.
Typical part cost: $110-550
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0CA1 mean?
P0CA1 means "Drive Motor Control Module Requested MIL Illumination". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0CA1?
downstream fault in drive motor system; communication lag — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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