P0606 BUICK Engine Control Module Internal Performance Error

Possible causes

– Engine Control Module (ECM) Harness power supply circuit is open or shorted
– Engine Control Module (ECM) Programming
– Faulty Engine Control Module (ECM)

Tech description

Check the PCM fuse, if fuse is OK try erasing the code first and if the code comes back you may have to reprogram or replaced the PCM.

When is the obd code mean?

Indicates the PCM has experienced an internal memory fault.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Engine may not start

P0606 BUICK OBD Code Description

The Engine Control Module (ECM) continuously monitors its internal memory status, internal circuits, and output signals to the throttle actuator. This self?check insures that the ECM is functioning properly. If any malfunction is detected, the ECM will set the code and illuminate the engine light.

BUICK Related P0606 code