P0756
Powertrain Codes
P0756 - BMW - Shift Solenoid B Open Circuit
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light) - Transmission will not shift gears.
Possible Causes
- Low transmission fluid level - Dirty transmission fluid - Faulty shift solenoid B valve - Shift solenoid B valve harness or connectors - Shift solenoid B valve circuit is open or shorted
When Detected
The P0756 code is detected when the ECM has detected a mechanical fault with the solenoid energized, valve stuck off
Description
Shift solenoid valve B is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.