P0131
O2 Sensor Circuit Low Voltage Bank 1 Sensor 1
P0131 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit Low Voltage Bank 1 Sensor 1. Common causes: oxygen sensor malfunction, vacuum leak. Estimated repair cost: $56–167.
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
Related codes
Error P0131 by Vehicle Brand
FAQ
What does the P0131 code mean?
P0131 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit Low Voltage Bank 1 Sensor 1
What causes a P0131 error code?
The most common causes of P0131 include: Oxygen sensor malfunction; Vacuum leak; Sensor is dirty or damaged; Problems with the sensor wiring harness.
How do I fix a P0131 diagnostic trouble code?
To fix P0131: Check the integrity of the sensor wiring harness. Check for vacuum leaks. Check fuel pressure. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0131?
Limited driving only, diagnose soon
How much does it cost to fix P0131?
The estimated repair cost for P0131 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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