The P0189 trouble code indicates an intermittent signal issue from the fuel temperature sensor B circuit. This code typically points to sporadic problems related to the sensor responsible for detecting the temperature of the fuel, leading to intermittent operational issues or inconsistent fuel temperature readings.
Fuel Temperature Sensor B Circuit Intermittent
Code symptoms P0189.
1. Engine hesitation or stalling.
2. Inconsistent 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 P0189.
1. Intermittently malfunctioning or faulty fuel temperature sensor.
2. Intermittent wiring or connector issues within the sensor circuit.
3. Intermittent problems with the Engine Control Module (ECM).
Code Solutions P0189.
1. Check for intermittent issues with the fuel temperature sensor and consider replacement if necessary.
2. Inspect for intermittent wiring or connector issues in the sensor circuit and repair as needed.
3. If intermittent ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.