BMW DTC P0079 – Exhaust Valve Control Solenoid Circuit Low (Bank 1)
DTC P0079 meaning on BMW
DTC P0079 on a BMW indicates a low voltage condition in the exhaust valve control solenoid circuit for Bank 1. This fault code is specific to the exhaust valve control system, which is responsible for regulating the flow of exhaust gases in the engine.
BMW DTC P0079 symptoms
Symptoms of DTC P0079 on a BMW may include poor engine performance, reduced fuel efficiency, rough idling, and potentially an illuminated check engine light on the dashboard. The vehicle may also experience issues with acceleration and overall drivability.
BMW DTC P0079 causes
The low voltage condition in the exhaust valve control solenoid circuit for Bank 1, triggering DTC P0079 on a BMW, can be caused by various factors. Common causes include a faulty exhaust valve control solenoid, damaged wiring or connectors in the circuit, or a malfunctioning engine control module (ECM).
BMW DTC P0079 seriousness
While DTC P0079 may not cause immediate harm to the vehicle, it can lead to poor engine performance and reduced fuel efficiency if left unresolved. Ignoring this fault code may result in further damage to engine components over time, potentially leading to more costly repairs.
How to diagnose DTC P0079 on BMW
To diagnose DTC P0079 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault code and perform a visual inspection of the exhaust valve control solenoid, wiring, and connectors. They may also conduct voltage tests to pinpoint the source of the low voltage condition.
How to fix DTC P0079 on BMW
Fixing DTC P0079 on a BMW usually involves replacing the faulty exhaust valve control solenoid, repairing any damaged wiring or connectors in the circuit, or addressing any issues with the engine control module. Once the root cause is identified and resolved, the fault code should be cleared from the system.
How to erase DTC P0079 on BMW
To erase DTC P0079 on a BMW, a mechanic can use a diagnostic scanner to clear the fault code from the engine control module’s memory. After the repair has been completed and the underlying issue resolved, the fault code can be erased to reset the system and turn off the check engine light.
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.