P2457 OBD II Trouble Code Exhaust Gas Recirculation Cooling System Performance

Symptoms of P2457 OBD II Trouble Code

  • There may be no symptoms when this code is stored
  • Diminished fuel efficiency
  • A stored code
  • Malfunction indicator lamp illumination
  • Coolant leak
  • Exhaust leak
  • Exhaust temperature sensor codes

Common Causes of P2457 OBD II Trouble Code

  • Low engine coolant
  • Defective EGR temperature sensor
  • Faulty exhaust temperature sensor
  • Exhaust leaks
  • Clogged EGR cooler
  • Engine overheating

Severity of P2457 OBD II Trouble Code

Since P2457 is related to the exhaust emissions system, it is not considered an urgent code. Symptoms of a P2457 code may include: