BMW DTC P0786 – Shift Timing Solenoid ‘A’ Range/Performance
DTC P0786 meaning on BMW
The DTC P0786 code on a BMW indicates an issue with the Shift Timing Solenoid ‘A’ Range/Performance. This means that the powertrain control module (PCM) has detected a discrepancy in the expected shift timing solenoid operation.
BMW DTC P0786 symptoms
Symptoms of a DTC P0786 on a BMW may include harsh shifting, delayed shifting, erratic shifting patterns, transmission slipping, and in some cases, the transmission may go into a limp mode where it operates in only one gear.
BMW DTC P0786 causes
The common causes of a DTC P0786 on a BMW include a faulty shift timing solenoid ‘A’, low transmission fluid level, dirty or contaminated transmission fluid, electrical issues such as wiring harness problems or a faulty PCM, and mechanical issues within the transmission.
BMW DTC P0786 seriousness
Ignoring a DTC P0786 on a BMW can lead to further damage to the transmission and drivability issues. It is important to address this code promptly to prevent more severe transmission problems and potential safety hazards.
How to diagnose DTC P0786 on BMW
To diagnose a DTC P0786 on a BMW, a mechanic would typically start by using a scan tool to retrieve the fault codes and then perform a visual inspection of the transmission and related components. They may also conduct tests on the shift timing solenoid ‘A’, check the transmission fluid level and condition, and inspect the wiring and connectors for any signs of damage.
How to fix DTC P0786 on BMW
Fixing a DTC P0786 on a BMW may involve replacing the shift timing solenoid ‘A’ if it is found to be faulty. Additionally, ensuring the transmission fluid is at the correct level and in good condition is important. Addressing any electrical issues, such as repairing wiring harnesses or replacing a faulty PCM, may also be necessary.
How to erase DTC P0786 on BMW
Once the underlying issue causing the DTC P0786 on a BMW has been resolved, the fault codes can be cleared using a scan tool. This will erase the code from the PCM’s memory and reset the transmission control module. It is important to verify that the issue has been fixed before clearing the codes to prevent them 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
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.