What does code P0387 mean?
Low signal detected from CKP B sensor
OBD-II Code
P0387 — Crankshaft Position Sensor B Low Input
Low signal detected from CKP B sensor
Common symptoms
- Hard starting
- unexpected engine shutdown
Possible causes
- Ground short
- damaged CKP B sensor
Initial recommendation
Inspect wiring, ground circuit and replace sensor if needed.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0387 with your vehicle's actual symptoms for more complete diagnostic guidance.
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