P23AC
NOx Sensor Circuit Bank 1 Sensor 3
P23AC is an OBD-II diagnostic trouble code meaning: NOx Sensor Circuit Bank 1 Sensor 3. Common causes: open or short circuit in the nox sensor circuit, poor contact in the sensor connector. Estimated repair cost: $133–278.
Symptoms
- Check Engine Light Is On
- Increased fuel consumption
- Reduced engine power
- Dips during acceleration
- Smell of fuel from the exhaust system
Causes
- Open or short circuit in the NOx sensor circuit
- Poor contact in the sensor connector
- Malfunction of the NOx sensor itself
- Wiring harness damage
- Problems with the engine control unit
How to Fix
- Check the integrity of the wiring to the NOx sensor
- Inspect the sensor connectors for oxidation or damage.
- Check NOx sensor resistance
- Replace NOx sensor if necessary
- Reset the error and check for its reappearance
Related codes
Error P23AC by Vehicle Brand
FAQ
What does the P23AC code mean?
P23AC is an OBD-II diagnostic trouble code that indicates: NOx Sensor Circuit Bank 1 Sensor 3
What causes a P23AC error code?
The most common causes of P23AC include: Open or short circuit in the NOx sensor circuit; Poor contact in the sensor connector; Malfunction of the NOx sensor itself; Wiring harness damage.
How do I fix a P23AC diagnostic trouble code?
To fix P23AC: Check the integrity of the wiring to the NOx sensor. Inspect the sensor connectors for oxidation or damage.. Check NOx sensor resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P23AC?
Yes, but get it checked soon
How much does it cost to fix P23AC?
The estimated repair cost for P23AC is $133–278. Actual cost depends on your vehicle, location, and labor rates.
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