BMW DTC P105F – H2-Rail Temperature Too Low
DTC P105F meaning on BMW
DTC P105F on a BMW indicates that the H2-Rail temperature is too low. This diagnostic trouble code (DTC) is specific to the hydrogen fuel system in certain BMW models.
BMW DTC P105F symptoms
Symptoms of DTC P105F on a BMW may include poor engine performance, reduced fuel efficiency, and potentially a check engine light illuminated on the dashboard.
BMW DTC P105F causes
The causes of DTC P105F on a BMW can vary, but common reasons include a faulty H2-Rail temperature sensor, issues with the hydrogen fuel system components, or wiring/connectivity problems.
BMW DTC P105F seriousness
While DTC P105F may not cause immediate safety concerns, it can affect the performance and efficiency of the vehicle. Ignoring this code may lead to further damage to the hydrogen fuel system components.
How to diagnose DTC P105F on BMW
To diagnose DTC P105F on a BMW, a diagnostic scan tool capable of reading manufacturer-specific codes is required. The technician will need to inspect the H2-Rail temperature sensor, check for wiring issues, and perform system tests to pinpoint the exact cause.
How to fix DTC P105F on BMW
Fixing DTC P105F on a BMW typically involves replacing the faulty H2-Rail temperature sensor, addressing any wiring problems, and ensuring proper connectivity within the hydrogen fuel system. It is recommended to follow manufacturer guidelines and use OEM parts for the repair.
How to erase DTC P105F on BMW
Once the underlying issue causing DTC P105F on a BMW has been resolved, the diagnostic trouble code can be erased using a diagnostic scan tool. This will clear the code from the vehicle’s memory and turn off the check engine light.
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.