Error code
OBD2 P0388
OBD2P0388
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Crankshaft Position Sensor 'B' Circuit High.
Severity
highDrive cautiously with frequent checks; may cause stalling or poor performance.
Summary
P0388 indicates that the Crankshaft Position Sensor B is providing an abnormally high voltage signal, which can affect engine timing and performance.
Common Causes
- Wiring short to positive
- Faulty CKP sensor
- ECM issue
Fixes
- Replace the faulty Crankshaft Position Sensor B.
FAQ
What does P0388 mean?
P0388 indicates a high input signal from the Crankshaft Position Sensor B, which can affect engine timing and performance.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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