BMW DTC P0771 – Shift Solenoid ‘E’ Performance/Stuck Off
DTC P0771 meaning on BMW
The Diagnostic Trouble Code (DTC) P0771 for BMW indicates an issue with the Shift Solenoid ‘E’ performance or that it is stuck off. The shift solenoid ‘E’ is responsible for controlling the flow of transmission fluid to engage or disengage specific gears within the transmission. When this solenoid malfunctions, it can lead to shifting problems and affect the overall performance of the transmission system.
BMW DTC P0771 symptoms
Some common symptoms associated with the BMW DTC P0771 may include:
- Harsh or delayed shifting
- Transmission slipping
- Erratic shifting patterns
- Transmission stuck in a particular gear
- Illuminated Check Engine Light
BMW DTC P0771 causes
The potential causes of the DTC P0771 on a BMW can include:
- Failed shift solenoid ‘E’
- Low transmission fluid level or dirty fluid
- Electrical issues such as wiring problems or a faulty transmission control module
- Mechanical issues within the transmission system
BMW DTC P0771 seriousness
Ignoring or neglecting the DTC P0771 on a BMW can lead to further transmission damage and potentially result in costly repairs. Driving with a malfunctioning shift solenoid can cause additional stress on the transmission components and may lead to a complete transmission failure if left unresolved.
How to diagnose DTC P0771 on BMW
To diagnose the DTC P0771 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes and identify the specific issue
- Inspect the transmission fluid level and condition
- Check the wiring and connectors related to the shift solenoid ‘E’
- Perform a thorough visual inspection of the transmission system
How to fix DTC P0771 on BMW
Depending on the root cause of the DTC P0771, the following steps may be taken to fix the issue:
- Replace the faulty shift solenoid ‘E’
- Perform a transmission fluid flush and refill if necessary
- Repair any damaged wiring or connectors
- Address any mechanical issues within the transmission
How to erase DTC P0771 on BMW
After fixing the underlying issue causing the DTC P0771, the fault codes can be cleared using a diagnostic scanner. By erasing the DTC P0771 code, the Check Engine Light should turn off. It is important to ensure that the repair has been successful and that the symptoms associated with the DTC have been resolved before clearing the fault codes.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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