P2AC3
Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2
P2AC3 is an OBD-II diagnostic trouble code meaning: Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2. Common causes: open or short circuit in the oxygen sensor circuit, poor contact in the sensor connector. Estimated repair cost: $28–78.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
- Possible problems starting the engine
Causes
- Open or short circuit in the oxygen sensor circuit
- Poor contact in the sensor connector
- Malfunction of the O2 sensor itself
- Wiring harness damage
- Problems with the engine control unit (ECU)
How to Fix
- Check the integrity of the sensor wiring and connectors
- Check the sensor supply voltage
- Test the oxygen sensor for compliance with specifications
- Replace O2 sensor if necessary
- Check the condition of the fuse for the corresponding circuit
Related codes
Error P2AC3 by Vehicle Brand
FAQ
What does the P2AC3 code mean?
P2AC3 is an OBD-II diagnostic trouble code that indicates: Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2
What causes a P2AC3 error code?
The most common causes of P2AC3 include: Open or short circuit in the oxygen sensor circuit; Poor contact in the sensor connector; Malfunction of the O2 sensor itself; Wiring harness damage.
How do I fix a P2AC3 diagnostic trouble code?
To fix P2AC3: Check the integrity of the sensor wiring and connectors. Check the sensor supply voltage. Test the oxygen sensor for compliance with specifications. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2AC3?
Yes, but get it checked soon
How much does it cost to fix P2AC3?
The estimated repair cost for P2AC3 is $28–78. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat