BMW DTC P1905 – Pressure Control Solenoid ‘F’ Shift Progress Too Low
DTC P1905 meaning on BMW
The Diagnostic Trouble Code (DTC) P1905 for BMW indicates an issue with the Pressure Control Solenoid ‘F’ Shift Progress being too low. This means that the transmission control module has detected that the pressure control solenoid responsible for regulating hydraulic pressure during gear shifts is not operating within the expected parameters.
BMW DTC P1905 symptoms
Symptoms of DTC P1905 on a BMW may include harsh or delayed shifting, erratic shifting behavior, transmission slipping, or the transmission going into limp mode. The vehicle may also exhibit poor acceleration and reduced fuel efficiency.
BMW DTC P1905 causes
The common causes of DTC P1905 on a BMW include a faulty pressure control solenoid ‘F’, low transmission fluid level or dirty fluid, wiring issues, or a malfunctioning transmission control module. Additionally, mechanical problems within the transmission itself can also trigger this fault code.
BMW DTC P1905 seriousness
Ignoring DTC P1905 on a BMW can lead to further damage to the transmission system, potentially resulting in costly repairs. Continued driving with this fault can cause more severe transmission issues and may eventually lead to complete transmission failure.
How to diagnose DTC P1905 on BMW
To diagnose DTC P1905 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes stored in the transmission control module. They would then inspect the pressure control solenoid ‘F’ and its wiring for any visible damage or corrosion. Testing the solenoid’s resistance and checking the transmission fluid level and condition are also essential steps in the diagnostic process.
How to fix DTC P1905 on BMW
Fixing DTC P1905 on a BMW usually involves replacing the faulty pressure control solenoid ‘F’. It is crucial to ensure that the transmission fluid is at the correct level and in good condition. Addressing any wiring issues and performing a thorough inspection of the transmission system can help prevent future occurrences of this fault code.
How to erase DTC P1905 on BMW
Once the underlying issue causing DTC P1905 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. This will reset the transmission control module and turn off the Check Engine Light. It is important to verify that the repair was successful by test-driving the vehicle and rescanning for any remaining 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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