P23B6
NOx Sensor Supply Voltage Circuit Bank 1 Sensor 3
P23B6 is an OBD-II diagnostic trouble code meaning: NOx Sensor Supply Voltage Circuit Bank 1 Sensor 3. Common causes: nox sensor malfunction, open or short circuit in the power supply. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Deterioration of environmental indicators
- Possible reduction in engine power
- Increased fuel consumption
- Errors in the SCR system (if installed)
Causes
- NOx sensor malfunction
- Open or short circuit in the power supply
- Problems with sensor connectors
- Engine control unit malfunction
- Problems with the SCR system
How to Fix
- Check the integrity of the sensor power supply circuit
- Inspect the connectors and contacts of the sensor
- Check the functionality of the NOx sensor
- Check the operation of the SCR system (if installed)
- Scan the control unit for additional errors
Related codes
Error P23B6 by Vehicle Brand
FAQ
What does the P23B6 code mean?
P23B6 is an OBD-II diagnostic trouble code that indicates: NOx Sensor Supply Voltage Circuit Bank 1 Sensor 3
What causes a P23B6 error code?
The most common causes of P23B6 include: NOx sensor malfunction; Open or short circuit in the power supply; Problems with sensor connectors; Engine control unit malfunction.
How do I fix a P23B6 diagnostic trouble code?
To fix P23B6: Check the integrity of the sensor power supply circuit. Inspect the connectors and contacts of the sensor. Check the functionality of the NOx sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P23B6?
Yes, but get it checked soon
How much does it cost to fix P23B6?
The estimated repair cost for P23B6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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