Nitrogen Oxide Sensor Overrun Test NOx Signal Too Low
Table of contents
P127B MINI Possible Causes
- Faulty Nitrogen Oxide Sensor (NOx)
- Nitrogen Oxide Sensor (NOx) harness is open or shorted
- Nitrogen Oxide Sensor (NOx) circuit poor electrical connection
How do I fix code P127B MINI?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P127B MINI code
The cost of diagnosing the P127B MINI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P127B MINI Description
The Engine Control Module (ECM) monitors the Nitrogen Oxide Sensor (NOx). The ECM sets the OBDII code when the Nitrogen Oxide Sensor (NOx) is not to factory specifications.