OBD Codes List

Diagnostic reference · P0C04

P0C04

Drive Motor B Current High

System
Powertrain control (P code)
Lamp
Check Engine Light
Category
Powertrain - Hybrid Propulsion

What it means

P0C04 means Drive Motor B Current High.

Check these first

  • A drive motor B current reading above its normal range
  • Worn or damaged drive motor B bearings
  • A short in the drive motor B windings
  • High resistance in the motor B circuit

What to do next

  1. Read drive motor B current on a scan tool
  2. Check the motor B bearings for wear
  3. Test the motor B windings for a short
  4. Measure the motor B circuit resistance against spec
  5. Replace the motor B control module if the circuit tests good
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.