BMW DTC P3115 – Cylinder 4 High Pressure Injector Low Side Booster Time Error
DTC P3115 meaning on BMW
DTC P3115 on a BMW indicates a Cylinder 4 High Pressure Injector Low Side Booster Time Error. This means that there is an issue with the high-pressure fuel injector in cylinder 4, specifically related to the booster time error on the low side.
BMW DTC P3115 symptoms
Symptoms of BMW DTC P3115 may include rough idling, engine misfires, loss of power, decreased fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P3115 causes
The causes of BMW DTC P3115 can vary, but common reasons include a faulty high-pressure fuel injector, wiring issues, a malfunctioning fuel injector driver module, or problems with the engine control module.
BMW DTC P3115 seriousness
Ignoring BMW DTC P3115 can lead to poor engine performance, potential damage to the catalytic converter, and increased emissions. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P3115 on BMW
To diagnose BMW DTC P3115, a mechanic would typically use a diagnostic scanner to retrieve the fault codes and perform a thorough inspection of the high-pressure fuel injector in cylinder 4, along with checking the related wiring and components for any faults.
How to fix DTC P3115 on BMW
Fixing BMW DTC P3115 may involve replacing the faulty high-pressure fuel injector in cylinder 4, repairing any damaged wiring, replacing the fuel injector driver module if necessary, or addressing any issues with the engine control module.
How to erase DTC P3115 on BMW
Once the underlying issue causing BMW DTC P3115 has been resolved, the fault codes can be cleared using a diagnostic scanner. This will erase the DTC P3115 code from the vehicle’s memory 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
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