U05A2
NOx Sensor B Received Invalid Data From ECM/PCM
U05A2 is an OBD-II diagnostic trouble code meaning: NOx Sensor B Received Invalid Data From ECM/PCM. Common causes: nox b sensor malfunction, problems with wiring to the sensor. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Deterioration of engine performance
- Increased fuel consumption
- Dips during acceleration
- Possible problems starting the engine
Causes
- NOx B sensor malfunction
- Problems with wiring to the sensor
- Engine control unit malfunction
- Software failures in ECM/PCM
- Corrosion or oxidation of contacts
How to Fix
- Check the status of NOx sensor B
- Check the integrity of wiring and contacts
- Scan the control unit for errors
- Check for ECM/PCM software updates
- If necessary, replace NOx B sensor
Related codes
Error U05A2 by Vehicle Brand
FAQ
What does the U05A2 code mean?
U05A2 is an OBD-II diagnostic trouble code that indicates: NOx Sensor B Received Invalid Data From ECM/PCM
What causes a U05A2 error code?
The most common causes of U05A2 include: NOx B sensor malfunction; Problems with wiring to the sensor; Engine control unit malfunction; Software failures in ECM/PCM.
How do I fix a U05A2 diagnostic trouble code?
To fix U05A2: Check the status of NOx sensor B. Check the integrity of wiring and contacts. Scan the control unit for errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U05A2?
Yes, but get it checked soon
How much does it cost to fix U05A2?
The estimated repair cost for U05A2 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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