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P0680 – BMW DTC

BMW DTC P0680 – Cylinder 10 Glow Plug Circuit/Open

DTC P0680 meaning on BMW

The Diagnostic Trouble Code (DTC) P0680 for BMW indicates a fault in the cylinder 10 glow plug circuit, specifically an open circuit. This means that the Engine Control Module (ECM) has detected a lack of continuity in the circuit responsible for controlling the glow plug in cylinder 10.

BMW DTC P0680 symptoms

Symptoms of a DTC P0680 in a BMW may include:

  • Engine misfires
  • Hard starting or extended cranking time
  • Reduced engine performance
  • Check Engine Light (CEL) illuminated on the dashboard

BMW DTC P0680 causes

The common causes of a DTC P0680 in a BMW include:

  • Faulty glow plug in cylinder 10
  • Wiring or connector issues in the glow plug circuit
  • Defective Engine Control Module (ECM)

BMW DTC P0680 seriousness

While a DTC P0680 may not cause immediate drivability issues, it can lead to poor engine performance and increased emissions. Ignoring this fault can potentially cause damage to the engine over time.

How to diagnose DTC P0680 on BMW

To diagnose a DTC P0680 on a BMW, follow these steps:

  1. Use a diagnostic scanner to retrieve the fault code and freeze frame data.
  2. Inspect the glow plug in cylinder 10 for continuity using a multimeter.
  3. Check the wiring and connectors in the glow plug circuit for any damage or corrosion.
  4. Test the Engine Control Module (ECM) for proper functioning.

How to fix DTC P0680 on BMW

To fix a DTC P0680 on a BMW, consider the following steps:

  1. Replace the faulty glow plug in cylinder 10.
  2. Repair or replace any damaged wiring or connectors in the glow plug circuit.
  3. If necessary, replace the Engine Control Module (ECM) with a new unit.

How to erase DTC P0680 on BMW

To erase a DTC P0680 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue causing the fault code, clearing the code will reset the Check Engine Light (CEL) and ensure proper operation of the vehicle.

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

← All BMW Diagnostic Trouble Codes

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