BMW DTC P0357 – Ignition Coil ‘G’ Primary Control Circuit/Open
DTC P0357 meaning on BMW
DTC P0357 for BMW indicates a malfunction in the ignition coil ‘G’ primary control circuit, specifically an open circuit. This means that the Engine Control Module (ECM) is not receiving the expected signal from the ignition coil ‘G’, which can lead to engine performance issues.
BMW DTC P0357 symptoms
Symptoms of DTC P0357 on a BMW may include engine misfires, rough idling, loss of power, and in some cases, the Check Engine Light may illuminate on the dashboard. The vehicle may also experience poor fuel efficiency and overall drivability issues.
BMW DTC P0357 causes
The primary causes of DTC P0357 on a BMW are typically related to wiring issues, such as a damaged or corroded wire in the ignition coil ‘G’ circuit. It could also be caused by a faulty ignition coil, a defective ECM, or poor electrical connections.
BMW DTC P0357 seriousness
Ignoring DTC P0357 on a BMW can lead to further engine damage and decreased performance. It is important to address this issue promptly to prevent potential long-term issues and ensure the vehicle operates efficiently.
How to diagnose DTC P0357 on BMW
To diagnose DTC P0357 on a BMW, start by visually inspecting the wiring and connectors in the ignition coil ‘G’ circuit. Use a multimeter to test for continuity and resistance in the circuit. Check the ignition coil for proper operation and ensure there are no loose connections.
How to fix DTC P0357 on BMW
To fix DTC P0357 on a BMW, repair any damaged wiring or connectors in the ignition coil ‘G’ circuit. Replace the ignition coil if it is found to be faulty. Ensure all electrical connections are secure and free of corrosion. Clear the DTC and test drive the vehicle to confirm the issue has been resolved.
How to erase DTC P0357 on BMW
To erase DTC P0357 on a BMW, you can use an OBD-II scanner to clear the fault code from the ECM’s memory. Once the repair has been completed and the issue resolved, connect the scanner to the vehicle’s OBD-II port and follow the on-screen instructions to clear the DTC. This will reset the Check Engine Light and ensure the fault code is no longer stored in the system.
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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