BMW DTC P2155 – Fuel Injector Group ‘D’ Supply Voltage Circuit/Open
DTC P2155 meaning on BMW
DTC P2155 on a BMW indicates an issue with the Fuel Injector Group ‘D’ Supply Voltage Circuit/Open. This means that there is a problem with the electrical circuit that supplies power to the fuel injectors in group ‘D’ of the engine.
BMW DTC P2155 symptoms
Symptoms of DTC P2155 on a BMW may include engine misfires, rough idling, poor acceleration, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P2155 causes
The common causes of DTC P2155 on a BMW include a faulty fuel injector in group ‘D’, a wiring issue in the fuel injector circuit, a poor electrical connection, or a problem with the Engine Control Module (ECM).
BMW DTC P2155 seriousness
While DTC P2155 may not cause immediate harm to the engine, it can lead to poor performance and decreased fuel efficiency. Ignoring this issue can potentially cause further damage to the engine over time.
How to diagnose DTC P2155 on BMW
To diagnose DTC P2155 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then inspect the fuel injectors in group ‘D’, check the wiring and connections for any damage, and perform electrical tests to pinpoint the exact cause of the issue.
How to fix DTC P2155 on BMW
Fixing DTC P2155 on a BMW may involve replacing the faulty fuel injector in group ‘D’, repairing any damaged wiring or connections, or replacing the Engine Control Module if necessary. It is recommended to follow the manufacturer’s repair procedures and use genuine parts to ensure proper functionality.
How to erase DTC P2155 on BMW
Once the underlying issue causing DTC P2155 on a BMW has been fixed, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and allow the vehicle to undergo a drive cycle to ensure the repair was successful.
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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