BMW DTC P1796 – Internal Transmission Control Module Error 7 (High Side Driver)
DTC P1796 meaning on BMW
DTC P1796 on a BMW indicates an Internal Transmission Control Module Error 7 related to the High Side Driver. This fault code is specific to the transmission control module and points to an issue with the high side driver circuit within the module.
BMW DTC P1796 symptoms
Symptoms of DTC P1796 on a BMW may include erratic shifting behavior, transmission slipping, harsh shifting, or the transmission going into limp mode. The vehicle may also display a transmission warning light on the dashboard.
BMW DTC P1796 causes
The most common causes of DTC P1796 on a BMW are a faulty high side driver circuit within the transmission control module, damaged wiring or connectors related to the high side driver, or a malfunction in the transmission control module itself.
BMW DTC P1796 seriousness
DTC P1796 should be addressed promptly as it can lead to drivability issues and potential damage to the transmission if left unresolved. Ignoring this fault code may result in further transmission problems and could potentially leave the vehicle inoperable.
How to diagnose DTC P1796 on BMW
To diagnose DTC P1796 on a BMW, a diagnostic scan tool capable of reading transmission fault codes will be needed. The technician will need to inspect the transmission control module, wiring, and connectors for any visible damage. Additionally, testing the high side driver circuit for proper functionality will be necessary.
How to fix DTC P1796 on BMW
Fixing DTC P1796 on a BMW may involve repairing or replacing the high side driver circuit within the transmission control module, repairing any damaged wiring or connectors, or replacing the transmission control module if deemed faulty. It is recommended to consult with a professional mechanic or dealership for proper diagnosis and repair.
How to erase DTC P1796 on BMW
Once the underlying issue causing DTC P1796 on a BMW has been resolved, the fault code can be cleared using a diagnostic scan tool. By accessing the transmission control module and clearing the stored fault code, the transmission warning light should turn off, indicating that the issue has been addressed.
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.