The P0163 trouble code indicates that the oxygen (O2) sensor circuit of bank 2 sensor 3 is experiencing low voltage. This code typically points to issues related to the oxygen sensor positioned after the second catalytic converter, monitoring the oxygen content in the exhaust gas, and aiding in emission control.
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
Code symptoms P0163.
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 P0163.
1. Faulty oxygen (O2) sensor.
2. Low voltage or wiring issues within the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0163.
1. Replace the oxygen (O2) sensor if it is faulty.
2. Check and repair any low voltage or wiring issues in the sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.