Error code

OBD2 P0A04

OBD2P0A04
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Motor Electronics Coolant Temperature Sensor Circuit Intermittent.

Severity

moderateCan drive but monitor the issue closely as it may worsen.

Summary

P0A04 indicates an intermittent issue with the motor electronics coolant temperature sensor circuit, which monitors engine coolant temperature.

Common Causes

  • Faulty coolant temperature sensor
  • Loose or corroded wiring harness connections

Fixes

  • Replace faulty coolant temperature sensor and inspect wiring harness connections.

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.