BMW DTC P3117 – Cylinder 5 High Pressure Injector Low Side Circuit Low
DTC P3117 meaning on BMW
DTC P3117 on a BMW indicates an issue with the Cylinder 5 High-Pressure Injector Low Side Circuit being detected as having low voltage. This fault code is specific to the fuel injection system of the vehicle.
BMW DTC P3117 symptoms
Symptoms of BMW DTC P3117 may include rough idling, misfires, loss of power, decreased fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P3117 causes
The causes of BMW DTC P3117 can vary, but common reasons include a faulty high-pressure fuel injector, wiring issues in the injector circuit, a defective injector driver in the engine control module (ECM), or a poor electrical connection.
BMW DTC P3117 seriousness
Ignoring BMW DTC P3117 can lead to poor engine performance, potential damage to the catalytic converter, and increased emissions. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P3117 on BMW
To diagnose BMW DTC P3117, a mechanic would typically perform a visual inspection of the injector and its wiring, conduct electrical tests to check for voltage and continuity, use a scan tool to retrieve live data and freeze frame data, and potentially perform a cylinder balance test to pinpoint the specific cylinder affected.
How to fix DTC P3117 on BMW
Fixing BMW DTC P3117 may involve replacing the faulty high-pressure injector, repairing any damaged wiring or connectors, testing and potentially replacing the injector driver in the ECM, and clearing the fault code from the vehicle’s memory.
How to erase DTC P3117 on BMW
To erase DTC P3117 on a BMW, a scan tool capable of accessing the vehicle’s onboard diagnostics system is required. Using the scan tool, navigate to the DTC menu, select the specific fault code (P3117), and choose the option to clear or erase the code. Once cleared, the check engine light should turn off if the issue has been successfully resolved.
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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