BMW DTC P0944 – Hydraulic Pressure Unit Loss of Pressure
DTC P0944 meaning on BMW
DTC P0944 on a BMW indicates a ¨Hydraulic Pressure Unit Loss of Pressure¨ fault. This fault code is related to the hydraulic system that controls the transmission’s shifting mechanism. The transmission control module (TCM) monitors the hydraulic pressure within the unit, and if it detects a loss of pressure, it triggers this diagnostic trouble code.
BMW DTC P0944 symptoms
Symptoms of DTC P0944 on a BMW may include harsh or delayed shifting, transmission slipping, difficulty engaging gears, and in some cases, the transmission may go into a limp mode. The vehicle’s check engine light may also illuminate to indicate a problem.
BMW DTC P0944 causes
The common causes of DTC P0944 on a BMW include low transmission fluid level, a faulty hydraulic pump, a malfunctioning pressure control solenoid, or internal leaks within the hydraulic system. Additionally, wiring issues or a faulty TCM could also trigger this fault code.
BMW DTC P0944 seriousness
DTC P0944 should be taken seriously as it can lead to drivability issues and potential damage to the transmission if left unresolved. Continuing to drive the vehicle with this fault present can result in further transmission problems and potentially costly repairs.
How to diagnose DTC P0944 on BMW
To diagnose DTC P0944 on a BMW, a mechanic would typically start by using a diagnostic scan tool to retrieve the fault code and any related data. They would then inspect the transmission fluid level and condition, check for leaks in the hydraulic system, test the pressure control solenoid, and inspect the wiring and connectors for any damage or corrosion.
How to fix DTC P0944 on BMW
Fixing DTC P0944 on a BMW may involve topping up the transmission fluid to the correct level, repairing any leaks in the hydraulic system, replacing a faulty hydraulic pump or pressure control solenoid, or addressing any wiring issues. It is recommended to follow the manufacturer’s diagnostic and repair procedures to ensure a proper fix.
How to erase DTC P0944 on BMW
Once the underlying issue causing DTC P0944 on a BMW has been identified and fixed, the fault code can be erased using a diagnostic scan tool. By clearing the code, the check engine light should turn off, indicating that the issue has been resolved. It is important to verify that the repair was successful by performing a test drive and ensuring that the symptoms have been eliminated.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.