BMW DTC P13DE – Ignition and Injectors Relay Power Supply Circuit Injection Circuit Low (Bank 1)
DTC P13DE meaning on BMW
DTC P13DE on a BMW refers to the Ignition and Injectors Relay Power Supply Circuit Injection Circuit Low fault detected in Bank 1. This fault code indicates that there is a low voltage condition in the power supply circuit for the ignition and injectors in Bank 1 of the engine.
BMW DTC P13DE symptoms
Symptoms of DTC P13DE on a BMW may include rough idling, misfiring, poor acceleration, engine stalling, and in some cases, the Check Engine Light may be illuminated on the dashboard.
BMW DTC P13DE causes
The common causes of DTC P13DE on a BMW include a faulty ignition/injectors relay, damaged wiring or connectors in the power supply circuit, a failing injector, or a problem with the Engine Control Module (ECM).
BMW DTC P13DE seriousness
Ignoring DTC P13DE on a BMW can lead to poor engine performance, reduced fuel efficiency, and potential damage to the engine components over time. It is important to address this fault code promptly to prevent further issues.
How to diagnose DTC P13DE on BMW
To diagnose DTC P13DE on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and perform a thorough inspection of the ignition and injector relay, wiring, connectors, and injectors in Bank 1. Testing the voltage levels in the power supply circuit and checking for any visible signs of damage or corrosion can help pinpoint the root cause of the issue.
How to fix DTC P13DE on BMW
Fixing DTC P13DE on a BMW may involve replacing the faulty ignition/injectors relay, repairing or replacing damaged wiring or connectors, addressing any issues with the injectors, or reprogramming the Engine Control Module (ECM) if necessary. It is recommended to follow the manufacturer’s diagnostic and repair procedures to ensure a proper fix.
How to erase DTC P13DE on BMW
Once the underlying issue causing DTC P13DE on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. By clearing the code, the Check Engine Light should turn off, indicating that the fault has been addressed. It is important to verify that the issue has been fixed before clearing the fault code.
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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