BMW DTC P079D – Transmission Friction Element ‘D’ Slip Detected
DTC P079D meaning on BMW
The DTC P079D code on a BMW indicates that the Transmission Friction Element ‘D’ has been detected to be slipping. This means that the transmission is experiencing issues with the clutch or brake associated with the ‘D’ friction element, leading to improper engagement and disengagement of gears.
BMW DTC P079D symptoms
Symptoms of the DTC P079D code on a BMW may include harsh shifting, delayed engagement when shifting gears, slipping gears, decreased fuel efficiency, and in some cases, the transmission may go into a fail-safe mode to prevent further damage.
BMW DTC P079D causes
The common causes of the DTC P079D code on a BMW include worn friction elements, low transmission fluid levels, contaminated transmission fluid, faulty solenoids, or issues with the transmission control module.
BMW DTC P079D seriousness
Ignoring the DTC P079D code 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.
How to diagnose DTC P079D on BMW
To diagnose the DTC P079D code 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 scanner to retrieve specific transmission fault codes.
How to fix DTC P079D on BMW
Fixing the DTC P079D code on a BMW may involve replacing the worn friction elements, performing a transmission fluid flush and filter replacement, repairing or replacing faulty solenoids, or addressing any issues with the transmission control module. It is recommended to consult with a professional mechanic for an accurate diagnosis and repair.
How to erase DTC P079D on BMW
To erase the DTC P079D code on a BMW, a mechanic would typically use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer system. Once the repairs have been completed and the underlying issue resolved, the code can be cleared to reset the transmission 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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