The P0426 trouble code is associated with Catalyst Temperature Sensor Range OR Performance (Bank 1, Sensor 1), indicating that the temperature sensor for the catalytic converter in Bank 1, Sensor 1, is operating outside the expected range.
P0426 Catalyst Temperature Sensor Range/Performance (Bank 1, Sensor 1)
Code symptoms P0426.
1. Illuminated “Check Engine” or “Service Engine Soon” light on the dashboard.
2. Decreased fuel efficiency.
3. Lack of power during acceleration.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0426.
1. Faulty catalyst temperature sensor in Bank 1, Sensor 1.
2. Wiring or connector issues in the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0426.
1. Inspect and, if necessary, replace the catalyst temperature sensor in Bank 1, Sensor 1.
2. Check for any wiring or connector issues in the sensor circuit and repair as needed.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.