BMW DTC P0755 – Shift Solenoid ‘B’
DTC P0755 meaning on BMW
The DTC P0755 code on a BMW indicates a malfunction in Shift Solenoid ‘B’ within the transmission control system. The shift solenoid ‘B’ is responsible for controlling the hydraulic pressure that engages and disengages the clutch packs to shift gears in the transmission.
BMW DTC P0755 symptoms
Symptoms of a DTC P0755 on a BMW may include harsh or delayed shifting, erratic shifting behavior, transmission slipping, or the transmission may get stuck in a particular gear. In some cases, the vehicle may go into a limp mode to prevent further damage.
BMW DTC P0755 causes
The common causes of a DTC P0755 on a BMW include a faulty shift solenoid ‘B’, low transmission fluid level or dirty fluid, wiring issues, or a malfunctioning transmission control module (TCM).
BMW DTC P0755 seriousness
Ignoring a DTC P0755 on a BMW can lead to further transmission damage and potentially leave the vehicle inoperable. It is important to address this issue promptly to prevent more severe and costly repairs.
How to diagnose DTC P0755 on BMW
To diagnose a DTC P0755 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes from the TCM. They would then inspect the shift solenoid ‘B’, check the transmission fluid level and condition, and test the wiring and connectors for any faults.
How to fix DTC P0755 on BMW
Fixing a DTC P0755 on a BMW may involve replacing the faulty shift solenoid ‘B’, performing a transmission fluid flush and filter change, repairing any damaged wiring or connectors, or replacing the TCM if necessary. It is recommended to follow the manufacturer’s repair procedures for a proper fix.
How to erase DTC P0755 on BMW
Once the underlying issue causing the DTC P0755 on a BMW has been resolved, the fault codes can be cleared using a diagnostic scanner. This will erase the code from the TCM’s memory and turn off the check engine light. It is important to ensure that the repair has been successful before clearing the 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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