BMW DTC P189E – Safety Function Engagement of Reverse at Too High Vehicle Speed
DTC P189E meaning on BMW
DTC P189E on a BMW indicates a Safety Function Engagement of Reverse at Too High Vehicle Speed. This fault code is triggered when the vehicle’s control module detects that the reverse gear has been engaged at a speed that exceeds the predetermined threshold.
BMW DTC P189E symptoms
Symptoms of DTC P189E on a BMW may include harsh shifting when engaging reverse gear, delayed engagement of reverse, or the inability to engage reverse gear altogether. In some cases, the vehicle may go into a limp mode to prevent further damage.
BMW DTC P189E causes
The most common causes of DTC P189E on a BMW include a faulty transmission control module, issues with the reverse gear sensor, or a malfunction in the vehicle speed sensor. Additionally, wiring or connection problems related to these components can also trigger this fault code.
BMW DTC P189E seriousness
While DTC P189E may not pose an immediate safety risk, it can lead to drivability issues and potential damage to the transmission if left unresolved. It is recommended to address this fault code promptly to prevent further complications.
How to diagnose DTC P189E on BMW
To diagnose DTC P189E on a BMW, a comprehensive scan tool capable of reading BMW-specific fault codes is required. The technician should inspect the transmission control module, reverse gear sensor, and vehicle speed sensor for any signs of damage or malfunction. Additionally, a thorough check of the wiring and connections associated with these components is necessary.
How to fix DTC P189E on BMW
Fixing DTC P189E on a BMW typically involves replacing the faulty transmission control module, reverse gear sensor, or vehicle speed sensor, depending on the root cause identified during diagnosis. It is crucial to ensure that all connections are secure and that there are no wiring issues contributing to the fault code.
How to erase DTC P189E on BMW
Once the underlying issue causing DTC P189E on a BMW has been resolved, the fault code can be cleared using a diagnostic scan tool. By accessing the vehicle’s control module and selecting the option to clear fault codes, the DTC P189E should be successfully erased from the system.
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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