OBD Codes List

Diagnostic reference · P0CBF

P0CBF

Drive Motor A Coolant Temperature Sensor Circuit High

System
Powertrain control (P code)
Lamp
Check Engine Light
Category
Powertrain - Fuel/Air Metering

What it means

P0CBF means Drive Motor A Coolant Temperature Sensor Circuit High.

Where it lives

For P0CBF, the sensor sits on the circuit this code reports. The description of P0CBF reports a fault at the sensor.

Check these first

  • A starter/generator coolant temperature sensor reporting a high signal
  • An open in the coolant temperature sensor signal circuit
  • A poor connection at the coolant temperature sensor connector
  • A failed starter/generator control module

What to do next

  1. Read the starter/generator coolant temperature sensor on a scan tool
  2. Look for an open in the coolant temperature sensor signal circuit
  3. Inspect the coolant temperature sensor connector and wiring
  4. Test the coolant temperature sensor circuit for open and short faults
  5. Replace the starter/generator coolant temperature sensor if it tests bad
  6. Clear the code and retest

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Updated

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