P2231
O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1
P2231 is an OBD-II diagnostic trouble code meaning: O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1. Common causes: damage to the oxygen sensor wiring harness, short circuit in the sensor heating circuit. Estimated repair cost: $17–56.
Symptoms
- Increased fuel consumption
- Unstable engine operation
- Check Engine light comes on
- Reduced engine power
- Increased emissions of harmful substances
Causes
- Damage to the oxygen sensor wiring harness
- Short circuit in the sensor heating circuit
- Oxygen sensor malfunction
- Damage to wire insulation
- Contact corrosion
How to Fix
- Check the integrity of the oxygen sensor wiring harness
- Check the resistance of the sensor heating circuit
- Replace the oxygen sensor if necessary
- Eliminate short circuit in wiring
- Clean contacts from corrosion
Related codes
Error P2231 by Vehicle Brand
FAQ
What does the P2231 code mean?
P2231 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1
What causes a P2231 error code?
The most common causes of P2231 include: Damage to the oxygen sensor wiring harness; Short circuit in the sensor heating circuit; Oxygen sensor malfunction; Damage to wire insulation.
How do I fix a P2231 diagnostic trouble code?
To fix P2231: Check the integrity of the oxygen sensor wiring harness. Check the resistance of the sensor heating circuit. Replace the oxygen sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2231?
Yes, but get it checked soon
How much does it cost to fix P2231?
The estimated repair cost for P2231 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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