OBD II Fault Code

  • OBD II P0439

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Catalyst Heater Control Circuit

Some Catalytic Converters are electronically heated to get the Catalytic Converter up to operating temperature quicker. If the heating element fails, the engine control module (PCM) will set code P0439.

Common Problems That Trigger the P0439 Code

  • Catalytic converter failure
  • Catalytic converter failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue
Not the OBD-II Code You're Looking For?

No comments yet…

Sign in to comment