P2099 OBD II Trouble Code Post Catalyst Fuel Trim System Too Rich Bank 2

Symptoms of P2099 OBD II Trouble Code

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

Common Causes of P2099 OBD II Trouble Code

  • Faulty bank 2 catalytic converter
  • A faulty mass air flow or manifold air pressure sensor
  • Defective bank 2 O2 sensor/s
  • Burnt, chafed, broken, or disconnected wiring and/or connectors
  • Engine exhaust leaks

Severity of P2099 OBD II Trouble Code

A P2099 code means that the post catalytic converter O2 sensor on bank 2 has detected a rich exhaust condition. Fuel efficiency may be compromised and the code should be addressed as severe.