P0147 OBD II Trouble Code 02 Sensor Heater Circuit Malfunction (Bank I Sensor 3)

Detailed information on troubleshooting and repairing a p0147 DTC code which refers to the O2 sensor heater circuit malfunction. Also includes links to relevant forum topics on the code.

Symptoms of P0147 OBD II Trouble Code

  • MIL (Malfunction Indicator Lamp) illumination
  • Poor/ rough idle

Common Causes of P0147 OBD II Trouble Code

  • Bad o2 sensor heater circuit
  • Bad o2 sensor
  • Wiring harness problems