P1376 CHEVROLET – Ignition Ground Circuit

P1376 CHEVROLET Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1376 CHEVROLET Possible Causes

Faulty Ignition Control Module,Ignition Control Module harness is open or shorted,Ignition Control Module circuit poor electrical connection

P1376 CHEVROLET Description

The PCM applies 2.5 volts on the Reference Low (Ref Lo) Voltage circuit to the Ignition Control Module. Ref Lo Voltage to the Powertrain Control Module (PCM) represents the voltage difference between Ref Lo and the PCM power ground. This is needed to ensure that the PCM and Ignition Control (IC) Module signals all have the same ground reference.