Description OBD-II Trouble Code Description for P0439 Alfa Romeo Catalyst Heater Control Circuit What does this mean? OBD2 Code P0439 Alfa Romeo definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of…
Tag: P0439
P0439 Acura Catalyst Heater Control Circuit Bank 2
Description OBD-II Trouble Code Description for P0439 Acura Catalyst Heater Control Circuit What does this mean? OBD2 Code P0439 Acura definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most…