P23B5
NOx Sensor Heater Sense Circuit Range/Performance Bank 1 Sensor 3
P23B5 is an OBD-II diagnostic trouble code meaning: NOx Sensor Heater Sense Circuit Range/Performance Bank 1 Sensor 3. Common causes: nox sensor malfunction, open or short circuit in the heater circuit. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Problems with passing technical inspection
- Possible misfires
Causes
- NOx sensor malfunction
- Open or short circuit in the heater circuit
- Poor contact in the sensor connector
- Wiring harness damage
- Problems with the engine control unit
How to Fix
- Check the continuity of the sensor heater circuit
- Inspect connectors and wiring for damage
- Check sensor heater resistance
- Replace NOx sensor if necessary
- Reset the error code and check the system
Related codes
Error P23B5 by Vehicle Brand
FAQ
What does the P23B5 code mean?
P23B5 is an OBD-II diagnostic trouble code that indicates: NOx Sensor Heater Sense Circuit Range/Performance Bank 1 Sensor 3
What causes a P23B5 error code?
The most common causes of P23B5 include: NOx sensor malfunction; Open or short circuit in the heater circuit; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P23B5 diagnostic trouble code?
To fix P23B5: Check the continuity of the sensor heater circuit. Inspect connectors and wiring for damage. Check sensor heater resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P23B5?
Yes, but get it checked soon
How much does it cost to fix P23B5?
The estimated repair cost for P23B5 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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