BMW DTC P079A – Transmission Friction Element ‘A’ Slip Detected
DTC P079A meaning on BMW
The Diagnostic Trouble Code (DTC) P079A for BMW indicates that the Transmission Friction Element ‘A’ has been detected to be slipping. This means that the transmission is experiencing issues with the clutch or friction material in the ‘A’ element, leading to improper engagement and potential slipping during operation.
BMW DTC P079A symptoms
Symptoms of DTC P079A on a BMW may include harsh shifting, delayed engagement when shifting gears, transmission slipping, decreased fuel efficiency, and in some cases, the transmission may go into a fail-safe mode to prevent further damage.
BMW DTC P079A causes
The common causes of DTC P079A on a BMW can include worn-out clutch or friction material in the ‘A’ element, low transmission fluid levels, contaminated transmission fluid, faulty solenoids, or issues with the transmission control module.
BMW DTC P079A seriousness
Ignoring DTC P079A on a BMW can lead to further damage to the transmission system, potentially resulting in complete transmission failure. It is crucial to address this issue promptly to prevent costly repairs and ensure the safety and performance of the vehicle.
How to diagnose DTC P079A on BMW
To diagnose DTC P079A on a BMW, a mechanic would typically perform a thorough inspection of the transmission system, check the transmission fluid level and condition, conduct a road test to observe the symptoms, and use a diagnostic scan tool to retrieve the fault codes and data from the transmission control module.
How to fix DTC P079A on BMW
Fixing DTC P079A on a BMW may involve replacing the worn-out clutch or friction material in the ‘A’ element, performing a transmission fluid flush and filter replacement, checking and repairing any faulty solenoids, or reprogramming the transmission control module. It is recommended to follow the manufacturer’s repair procedures and use quality replacement parts.
How to erase DTC P079A on BMW
Once the underlying issue causing DTC P079A on a BMW has been fixed, the fault codes can be erased using a diagnostic scan tool. By clearing the codes, the vehicle’s onboard computer will reset the transmission system’s adaptations and monitor the system for any recurring issues.
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.