BMW DTC P185B – Pressure Control Solenoid Control – Unpermitted Engagement of Reverse at Too High Vehicle Speed
DTC P185B meaning on BMW
DTC P185B on a BMW refers to the Pressure Control Solenoid Control – Unpermitted Engagement of Reverse at Too High Vehicle Speed fault code. This code indicates that the transmission control module has detected an unauthorized engagement of the reverse gear at a speed that is considered too high for safe operation.
BMW DTC P185B symptoms
Symptoms of the DTC P185B on a BMW may include harsh shifting, transmission slipping, delayed engagement into gear, and in some cases, the transmission may go into a failsafe mode to prevent further damage.
BMW DTC P185B causes
The most common causes of the DTC P185B on a BMW include a faulty pressure control solenoid, a malfunctioning transmission control module, low transmission fluid level, or internal transmission issues such as worn clutches or valves.
BMW DTC P185B seriousness
The DTC P185B fault code should be taken seriously as it can lead to further transmission damage if not addressed promptly. Driving with this fault present can cause additional stress on the transmission components and may result in costly repairs if left unresolved.
How to diagnose DTC P185B on BMW
To diagnose the DTC P185B on a BMW, a professional diagnostic scan tool is required to retrieve the fault code and any related data. A thorough inspection of the transmission system, including the pressure control solenoid, wiring harness, and fluid levels, should be conducted to identify the root cause of the issue.
How to fix DTC P185B on BMW
Fixing the DTC P185B on a BMW may involve replacing the pressure control solenoid, repairing any damaged wiring, ensuring the transmission fluid is at the correct level and condition, or reprogramming the transmission control module if necessary. It is recommended to have this repair performed by a qualified automotive technician to ensure proper diagnosis and resolution of the issue.
How to erase DTC P185B on BMW
To erase the DTC P185B fault code on a BMW, a diagnostic scan tool capable of clearing fault codes is required. Once the underlying issue has been addressed and fixed, the fault code can be cleared using the scan tool. It is important to verify that the issue has been resolved before clearing the fault code to prevent it from reoccurring.
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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