P12B9 BMW - Ambient Pressure Sensor Overrun Pressure Too High
P12B9 BMW Possible Causes
- Faulty Ambient Pressure Sensor
- Ambient Pressure Sensor harness is open or shorted
- Ambient Pressure Sensor circuit poor electrical connection
How do I fix code P12B9 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 P12B9 BMW code
Labor: 1.0The cost of diagnosing the P12B9 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.
P12B9 BMW Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P12B9 BMW MeaningDuring the control module's shutdown phase the diagnostic function monitors the barometric- pressure sensor, intake-manifold pressure sensor, and boost-pressure sensor to determine whether they are all measuring the same pressure. The ECM sets the OBDII code when the Ambient Pressure Sensor is not to factory specifications.
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