Ignition Control Module Cam Ref Pulse To 4X Ref Pulse Incorrect
Table of contents
P1377 BUICK Possible Causes
- Faulty 4X Crankshaft Position (CKP) Sensor
- 4X Crankshaft Position (CKP) Sensor harness is open or shorted
- 4X Crankshaft Position (CKP) Sensor circuit poor electrical connection
How do I fix code P1377 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1377 BUICK code
The cost of diagnosing the P1377 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1377 BUICK Description
The Powertrain Control Module (PCM) has detected an incorrect number of 4X pulses compared to the cam reference- 4X signal is lost.