garajizOBD-II code · generic
U05A9
NOx Sensor C Received Invalid Data From ECM/PCM
- System
- U — In-vehicle network
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does U05A9 mean?
U05A9 is defined as “NOx Sensor C Received Invalid Data From ECM/PCM”.
Drive gently and only as far as you need to; have it checked as soon as possible.
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This page is general information; an exact diagnosis needs measurements and a technician’s check.