OBD Codes List

Diagnostic reference · P0A06

P0A06

Motor Electronics Coolant Pump A Control Circuit Low

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

What it means

P0A06 means Motor Electronics Coolant Pump A Control Circuit Low.

Where it lives

For P0A06, the pump sits on the circuit this code reports. The description of P0A06 reports a fault at the pump.

Check these first

  • Low battery voltage
  • Short to ground in the coolant pump A control circuit
  • Corrosion in the coolant pump A connector
  • A failed coolant pump A
  • A fault in the power inverter module

What to do next

  1. Check battery voltage and state of charge
  2. Inspect the coolant pump A wiring and connector
  3. Test the control circuit for a short to ground
  4. Command coolant pump A with a scan tool
  5. Replace coolant pump A if it does not run
  6. Clear the code and retest

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Updated

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