P2284Audi A6Years: 1996 - 2026
NOx Sensor Circuit (P2284) - Bank 2
Reviewed by ASE Certified Technician
What does this mean?
Code P2284 indicates a problem with the NOx (nitrogen oxide) sensor circuit on Bank 2. NOx sensors monitor nitrogen oxide levels in the exhaust for emissions control.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Audi A6 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty NOx sensor
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
PCM/ECM software needs update (TSB)
Symptoms to Watch For
- Check Engine Light is illuminated
- Failed emissions test
- Decreased fuel economy
- Vehicle enters reduced power / limp mode