P23AB
NOx Sensor Processor Performance Bank 1 Sensor 3
P23AB is an OBD-II diagnostic trouble code meaning: NOx Sensor Processor Performance Bank 1 Sensor 3. Common causes: nox sensor malfunction, damage to the sensor wiring harness. Estimated repair cost: $167–444.
Symptoms
- Check Engine light comes on
- Deterioration of vehicle dynamics
- Increased fuel consumption
- Unstable engine idling
- Possible problems with passing technical inspection
Causes
- NOx sensor malfunction
- Damage to the sensor wiring harness
- Corrosion of contacts or connectors
- Sensor power problems
- Errors in ECU software
How to Fix
- Check the integrity of the NOx sensor wiring harness
- Check the supply voltage and ground of the sensor
- Clean sensor connector contacts
- Scan the ECU for software updates
- If necessary, replace the NOx sensor
Related codes
Error P23AB by Vehicle Brand
FAQ
What does the P23AB code mean?
P23AB is an OBD-II diagnostic trouble code that indicates: NOx Sensor Processor Performance Bank 1 Sensor 3
What causes a P23AB error code?
The most common causes of P23AB include: NOx sensor malfunction; Damage to the sensor wiring harness; Corrosion of contacts or connectors; Sensor power problems.
How do I fix a P23AB diagnostic trouble code?
To fix P23AB: Check the integrity of the NOx sensor wiring harness. Check the supply voltage and ground of the sensor. Clean sensor connector contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P23AB?
Yes, but get it checked soon
How much does it cost to fix P23AB?
The estimated repair cost for P23AB is $167–444. Actual cost depends on your vehicle, location, and labor rates.
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