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 notes

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

When is the code detected?

Indicates the ECM has experienced an internal memory fault.

Symptoms

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

P0606 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.

P0606 Information for specific makes

P0606 ACURA
P0606 CHEVROLET
P0606 CHRYSLER
P0606 FORD
P0606 HONDA
P0606 ISUZU
P0606 KIA
P0606 LEXUS
P0606 MAZDA
P0606 MITSUBISHI
P0606 SATURN
P0606 TOYOTA
P0606 VOLKSWAGEN
P0606 SCION
P0606 CADILLAC
P0606 BUICK
P0606 GMC
P0606 PONTIAC