P1146
Heated Oxygen Sensor 2 Minimum Voltage Monitoring Bank 1
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$28–67 (est.)
Symptoms
- Increased fuel consumption
- Unstable engine operation
- Check Engine Light Is On
- Reduced engine power
- Increased emissions of harmful substances
Causes
- Faulty oxygen sensor
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Circuit Grounding Problems
- Engine control unit malfunction
How to Fix
- Check the integrity of the sensor wiring harness
- Check connections and contacts in the sensor connector
- Check the voltage and resistance of the sensor
- Replace the oxygen sensor if necessary
- Reset the error code and check if it returns