P0150 OBD II Trouble Code 02 Sensor Circuit Malfunction (Bank 2 Sensor 1)

Symptoms of P0150 OBD II Trouble Code

  • MIL illumination
  • Engine runs rough, missing or stumbling
  • Blows black smoke from tail pipe
  • Engine dies
  • Poor fuel economy

Common Causes of P0150 OBD II Trouble Code

  • Water or corrosion in the connector
  • Loose terminals in the connector
  • Wiring burnt on exhaust components
  • Open or short in the wiring due to rubbing on engine components
  • Holes in exhaust allowing unmetered oxygen into exhaust system
  • Unmetered vacuum leak at the engine
  • Bad o2 sensor
  • Bad PCM