The P0187 trouble code indicates a low input signal from the fuel temperature sensor B circuit. This code typically points to issues related to the sensor responsible for detecting the temperature of the fuel, potentially causing operational problems or inaccurate fuel temperature readings due to a low input signal.
Fuel Temperature Sensor B Circuit Low Input
Code symptoms P0187.
1. Engine hesitation or stalling.
2. Decreased fuel efficiency.
3. Malfunction indicator light (MIL) illumination.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0187.
1. Malfunctioning or faulty fuel temperature sensor.
2. Wiring or connector issues within the sensor circuit.
3. Potential problems with the Engine Control Module (ECM).
Code Solutions P0187.
1. Replace the fuel temperature sensor if it is malfunctioning or providing low input signals.
2. Check and repair any wiring or connector issues in the sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.