P1309 HYUNDAI – Acceleration Sensor Circuit High Input

P1309 HYUNDAI Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1309 HYUNDAI Possible Causes

Faulty Acceleration Sensor,Acceleration Sensor harness is open or shorted,Acceleration Sensor circuit poor electrical conection

P1309 HYUNDAI Description

The Chassis acceleration(Rough Road) sensor consists of a piezoelectric vibration pick up which detects vertical acceleration of the vehicle.The sensor signal is used by the ECM to determine the degree of vertical movement of the car, for example, on a bumpy road.Since this may also cause uneven engine running, the ECM uses the signal to distinguish the phenomenon from actual misfiring.