P128A MINI - Nitrogen Oxide Sensor Regeneration Nitrogen Oxide Cat Regeneration Monitoring
- Faulty Nitrogen Oxide (NOx) Sensor
- Nitrogen Oxide (NOx) Sensor harness is open or shorted
- Nitrogen Oxide (NOx) Sensor circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P128a Mini DescriptionThe Engine Control Module (ECM) monitors the Nitrogen Oxide (NOx) Sensor. The ECM sets the OBDII code when the Nitrogen Oxide (NOx) Sensor is not to factory specifications.
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