P0654 – BMW DTC

BMW DTC P0654 – Engine RPM Output Circuit/Open

DTC P0654 meaning on BMW

DTC P0654 on a BMW indicates an issue with the Engine RPM Output Circuit/Open. This fault code is triggered when the Engine Control Module (ECM) detects an open circuit or a high resistance in the engine RPM output circuit.

BMW DTC P0654 symptoms

Symptoms of DTC P0654 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Engine may run rough or stall
• Loss of power
• Difficulty starting the engine

BMW DTC P0654 causes

Common causes of DTC P0654 on a BMW include:

• Faulty engine RPM sensor
• Open or short circuit in the engine RPM output wiring
• Defective Engine Control Module (ECM)

BMW DTC P0654 seriousness

DTC P0654 should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. Ignoring this fault code may result in poor engine performance and increased fuel consumption.

How to diagnose DTC P0654 on BMW

To diagnose DTC P0654 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the engine RPM sensor and its wiring for any visible damage or corrosion
3. Check the continuity of the engine RPM output circuit using a multimeter
4. Test the engine RPM sensor for proper operation
5. Inspect the ECM for any signs of damage or water intrusion

How to fix DTC P0654 on BMW

To fix DTC P0654 on a BMW, consider the following:

1. Replace the faulty engine RPM sensor if necessary
2. Repair any open or short circuits in the engine RPM output wiring
3. If the ECM is faulty, replace it with a new or remanufactured unit
4. Clear the fault code and perform a test drive to ensure the issue is resolved

How to erase DTC P0654 on BMW

To erase DTC P0654 on a BMW, use a diagnostic scanner to clear the fault code from the ECM’s memory. After clearing the code, perform a test drive to verify that the issue has been resolved. If the fault code returns, further diagnosis may be required.

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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