P1403 – Exhaust Gas Recirculation System Valve 1

P1403 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1403 Possible Causes

Carbon blockage of the pintle,Faulty Exhaust Gas Recirculation (EGR) valve

P1403 Description

The Powertrain Control Module (PCM) monitors the Exhaust Gas Recirculation (EGR) valve pintle position input to ensure that the valve responds properly to commands from the PCM. When the ignition switch is turned ON, the PCM learns the EGR learned minimum position. The PCM compares the EGR learned minimum position to the EGR position sensor when the EGR valve is commanded closed.