P015B OBD II Trouble Code O2 Sensor Delayed Response - Lean to Rich (Bank 1 Sensor 1)

Symptoms of P015B OBD II Trouble Code

  • Lowered fuel efficiency
  • A general lack engine performance
  • Other related diagnostic trouble codes may also be stored
  • Service engine soon lamp illumination

Common Causes of P015B OBD II Trouble Code

  • Defective O2 sensor(s)
  • Burnt, broken, or disconnected wiring and/or connectors
  • Defective catalytic converter
  • Engine exhaust leaks

Severity of P015B OBD II Trouble Code

Since a P015B code means that an O2 sensor has remained slow or unresponsive for an extended period of time, it should be categorized as severe.