The P0387 trouble code is associated with the Crankshaft Position Sensor “B” Circuit A Low Input, indicating a low voltage condition in the circuit of crankshaft position sensor B.
Crankshaft Position Sensor “B” Circuit A Low Input
Code symptoms P0387.
1. Illuminated “Check Engine” or “Service Engine Soon” light on the dashboard.
2. Difficulty starting the engine.
3. Irregular engine operation.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0387.
1. Low voltage condition in the crankshaft position sensor B circuit.
2. Wiring or connection issues in the circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0387.
1. Inspect and, if necessary, replace the malfunctioning crankshaft position sensor B.
2. Check for any faults or damages in the wiring or connections of the circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.