P0131
O2 Sensor Circuit Low Voltage Bank 1 Sensor 1
Severity: MEDIUM
Symptoms
- Increased fuel consumption
- Deterioration in acceleration dynamics
- Unstable idle
- Check Engine Light Is On
Causes
- Oxygen sensor malfunction
- Vacuum leak
- Sensor is dirty or damaged
- Problems with the sensor wiring harness
- Low fuel pressure
- Malfunction of fuel injectors
How to Fix
- Check the integrity of the sensor wiring harness
- Check for vacuum leaks
- Check fuel pressure
- Check the condition of the fuel injectors
- Replace the oxygen sensor if necessary