BMW DTC P1772 – Turbine Speed and Engine Speed in Transmission Range D Correlation
DTC P1772 meaning on BMW
The Diagnostic Trouble Code (DTC) P1772 for BMW indicates a correlation issue between the turbine speed and engine speed in Transmission Range D. This means that the Engine Control Module (ECM) has detected a discrepancy between the rotational speeds of the engine and the transmission turbine while the vehicle is in gear D.
BMW DTC P1772 symptoms
Symptoms of DTC P1772 on a BMW may include harsh shifting, delayed engagement when shifting into gear D, transmission slipping, decreased fuel efficiency, and in some cases, the transmission may go into limp mode. The Check Engine Light may also illuminate on the dashboard.
BMW DTC P1772 causes
The most common causes of DTC P1772 on a BMW include issues with the transmission speed sensors, faulty wiring or connectors in the transmission system, low transmission fluid levels, or a malfunctioning transmission control module.
BMW DTC P1772 seriousness
Ignoring DTC P1772 on a BMW can lead to further damage to the transmission system, potentially resulting in costly repairs. It is important to address this issue promptly to prevent any long-term damage to the vehicle.
How to diagnose DTC P1772 on BMW
To diagnose DTC P1772 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then perform a visual inspection of the transmission system, check the transmission fluid level and condition, and test the transmission speed sensors and related components for proper functionality.
How to fix DTC P1772 on BMW
Fixing DTC P1772 on a BMW may involve replacing faulty transmission speed sensors, repairing or replacing damaged wiring or connectors, ensuring the transmission fluid is at the correct level and in good condition, or reprogramming the transmission control module. It is recommended to consult with a qualified mechanic or dealership for proper diagnosis and repair.
How to erase DTC P1772 on BMW
Once the underlying issue causing DTC P1772 on a BMW has been resolved, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and allow the vehicle’s ECM to monitor the system for any new faults. It is important to ensure that the repair has been successful before clearing the fault codes.