What does code P0654 mean?
A malfunction is detected in the engine RPM output signal sent from the ECU to other control modules.
OBD-II Code
P0654 — Engine RPM Output Circuit Malfunction
A malfunction is detected in the engine RPM output signal sent from the ECU to other control modules.
Common symptoms
- Erratic tachometer or speed-related behavior
- improper transmission shifting
Possible causes
- Corrupted RPM signal
- broken wiring
- failing PCM
Initial recommendation
Verify RPM output signal from ECU and check wiring continuity.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0654 with your vehicle's actual symptoms for more complete diagnostic guidance.
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