U05A5
Invalid Data Received From NH3 Sensor
U05A5 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From NH3 Sensor. Common causes: nh3 sensor malfunction, damage to the sensor wiring harness. Estimated repair cost: $56–167.
Symptoms
- Increased emissions of harmful substances
- Check Engine light comes on
- Reduced engine power
- Unstable engine idling
Causes
- NH3 sensor malfunction
- Damage to the sensor wiring harness
- Poor contact in the sensor connector
- Problems with the SCR control module
- Sensor contamination
How to Fix
- Check the integrity of the sensor wiring harness
- Clean the contacts of the sensor connector
- Check the functionality of the NH3 sensor
- Replace sensor if necessary
- Check and update control module software
Related codes
Error U05A5 by Vehicle Brand
FAQ
What does the U05A5 code mean?
U05A5 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From NH3 Sensor
What causes a U05A5 error code?
The most common causes of U05A5 include: NH3 sensor malfunction; Damage to the sensor wiring harness; Poor contact in the sensor connector; Problems with the SCR control module.
How do I fix a U05A5 diagnostic trouble code?
To fix U05A5: Check the integrity of the sensor wiring harness. Clean the contacts of the sensor connector. Check the functionality of the NH3 sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U05A5?
Yes, but get it checked soon
How much does it cost to fix U05A5?
The estimated repair cost for U05A5 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat