P0388
Crankshaft Position Sensor B Circuit High Input
Generic code
Ignition System
High severity
Moderate repair
Free on OBD DashX
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What P0388 means
- The fault code P0388 suggests a high input voltage in the circuit for the B crankshaft position sensor. This fault code may cause rough idling, stalling, or engine misfires.
Possible symptoms
- Illuminated check engine light
- Rough idling or stalling
- Engine misfires
- Reduced engine power or acceleration
Possible causes
- Damage to the wiring of the crankshaft position sensor circuit
- Poor electrical connections in the circuit
- Failed crankshaft position sensor
- Failed engine control module (ECM)
Related parts
- Crankshaft Position Sensor: The crankshaft position sensor monitors the position of the crankshaft to regulate fuel injection. Problems lead to engine misfire and engine stalling
Possible solutions
- Check and repair any damaged wiring in the circuit
- Clean or tighten any loose or corroded electrical connections
- Replace the crankshaft position sensor if necessary
- Replace the engine control module (ECM) if necessary
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P0388 on OBD DashX
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