P121C BMW - Nitrogen Oxide Sensor Heating Activation Short Circuit
P121C BMW Possible Causes
- Faulty Nitrogen Oxide (NOx) Sensor
- Nitrogen Oxide (NOx) Sensor harness is open or shorted
- Nitrogen Oxide (NOx) Sensor circuit poor electrical connection
How do I fix code P121C BMW
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 P121C BMW code
Labor: 1.0The cost of diagnosing the P121C BMW code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
P121C BMW Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P121C BMW MeaningThe Engine Control Module (ECM) monitors the Nitrogen Oxide (NOx) Sensor. The ECM sets the OBDII code when the Nitrogen Oxide Sensor is not to factory specifications.
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