BMW DTC P1079 – VVL-Overload Protection (Bank 2)
DTC P1079 meaning on BMW
DTC P1079 on a BMW refers to VVL-Overload Protection (Bank 2). This diagnostic trouble code indicates that there is an issue with the Variable Valve Lift system on Bank 2 of the engine. The Variable Valve Lift system is responsible for adjusting the lift of the intake and exhaust valves to optimize engine performance and efficiency.
BMW DTC P1079 symptoms
Symptoms of DTC P1079 on a BMW may include rough idling, loss of power, engine misfires, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P1079 causes
The causes of DTC P1079 on a BMW can vary, but common reasons include a faulty Variable Valve Lift system component, wiring issues, sensor malfunctions, or problems with the engine control module.
BMW DTC P1079 seriousness
While DTC P1079 may not always result in immediate drivability issues, it is important to address this code promptly to prevent potential long-term damage to the engine and ensure optimal performance of the vehicle.
How to diagnose DTC P1079 on BMW
To diagnose DTC P1079 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the engine control module. They would then perform a visual inspection of the Variable Valve Lift system components, check for any loose connections or damaged wiring, and conduct further testing to pinpoint the exact cause of the issue.
How to fix DTC P1079 on BMW
Fixing DTC P1079 on a BMW may involve replacing faulty Variable Valve Lift system components, repairing any damaged wiring or connections, resetting the engine control module, and conducting a thorough test drive to ensure the issue has been resolved.
How to erase DTC P1079 on BMW
To erase DTC P1079 on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the engine control module. Once the codes have been cleared, the Check Engine Light should turn off. It is important to verify that the issue has been resolved by performing a final diagnostic check before returning the vehicle to the customer.
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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