Possible causes

– Engine Control Module (ECM) may be faulty
– ECM harness power supply circuit is open or shorted
– ECM harness ground circuit is open or shorted

Symptoms

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

P0605 Description

The Engine Control Module (ECM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the ECM is functioning properly. If any malfunction is detected, the ECM sets the P0605 code and illuminates the MIL.

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P0605 Information for specific makes

P0605 FORD
P0605 HYUNDAI
P0605 INFINITI
P0605 ISUZU
P0605 KIA
P0605 MAZDA
P0605 MITSUBISHI
P0605 NISSAN
P0605 SUBARU
P0605 TOYOTA
P0605 VOLKSWAGEN