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
– ECM harness power supply circuit is open or shorted
– ECM harness ground circuit is open or shorted
Tech description
Try erasing the code first, if the light comes back ON you may have to replaced the ECM to repair the problem.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Engine may not start
– Engine may not start
P0605 INFINITI OBD Code Description