P1276
Air Fuel Ratio Sensor 1 Bank 1 Circuit High Voltage Detected
P1276 is an OBD-II diagnostic trouble code meaning: Air Fuel Ratio Sensor 1 Bank 1 Circuit High Voltage Detected. Common causes: faulty air-fuel ratio sensor, open or short circuit in the sensor circuit. Estimated repair cost: $33–89.
Symptoms
- Increased fuel consumption
- Reduced engine power
- Check Engine Light Is On
- Unstable engine idling
- Increased emissions
Causes
- Faulty air-fuel ratio sensor
- Open or short circuit in the sensor circuit
- Problems with the wiring harness or connectors
- Engine ECU malfunction
- Sensor circuit grounding problems
How to Fix
- Check the condition of the AFR sensor and its connectors
- Check the integrity of the sensor circuit (breaks, short circuits)
- Check sensor voltage and resistance to specifications
- Replace faulty air-fuel ratio sensor if necessary
- Check and, if necessary, reflash the engine ECU
Related codes
Error P1276 by Vehicle Brand
FAQ
What does the P1276 code mean?
P1276 is an OBD-II diagnostic trouble code that indicates: Air Fuel Ratio Sensor 1 Bank 1 Circuit High Voltage Detected
What causes a P1276 error code?
The most common causes of P1276 include: Faulty air-fuel ratio sensor; Open or short circuit in the sensor circuit; Problems with the wiring harness or connectors; Engine ECU malfunction.
How do I fix a P1276 diagnostic trouble code?
To fix P1276: Check the condition of the AFR sensor and its connectors. Check the integrity of the sensor circuit (breaks, short circuits). Check sensor voltage and resistance to specifications. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1276?
Yes, but get it checked soon
How much does it cost to fix P1276?
The estimated repair cost for P1276 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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