P2BAC OBD II Trouble Code NOx Exceedance - Deactivation of EGR

Symptoms of P2BAC OBD II Trouble Code

  • Diminished engine performance
  • Increased black smoke from exhaust
  • Decreased fuel efficiency

Common Causes of P2BAC OBD II Trouble Code

  • Improper DPF or NOx trap rejuvenation fluid
  • Not enough rejuvenation fluid
  • Inefficient DPF or NOx trap rejuvenation due to driving habits
  • Defective catalytic converter (if applicable)
  • Faulty DPF, NOx trap, or O2 sensor/s

Severity of P2BAC OBD II Trouble Code

The severity of a stored code P2BAC is dependent upon which accompanying codes are present. The P2BAC should not have any symptoms directly related to it.