The P0159 trouble code indicates a slow response in the oxygen (O2) sensor circuit of bank 2 sensor 2. This code typically points to issues related to the oxygen sensor positioned after the catalytic converter, monitoring the oxygen content in the exhaust gas, and aiding in emission control.
O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
Code symptoms P0159.
1. Poor fuel efficiency.
2. Engine performance issues.
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 P0159.
1. Faulty oxygen (O2) sensor.
2. Wiring or connector issues within the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0159.
1. Replace the oxygen (O2) sensor if it is faulty.
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.