Possible causes

– Faulty Crankshaft Sensor
– Crankshaft Sensor harness is open or shorted
– Crankshaft Sensor circuit poor electrical connection
– Faulty Ignition Control Module

When is the code detected?

The Powertrain Control Module (PCM) detects a predetermined amount of high resolution pulses before detecting any low resolution pulses

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1371 Information for specific makes

P1371 BUICK
P1371 CADILLAC
P1371 CHEVROLET
P1371 GMC
P1371 PONTIAC