Fault Code P0654
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0654
ECU / Output Circuit Fault
DTC P0654 indicates a fault in the engine speed/RPM output circuit intended for the tachometer or other systems. The ECU detects abnormal voltage or current in this circuit.
Part Details
Part Name
Electronic Control Unit (ECU/PCM), Wiring
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪300 - ₪6,000
Engine Location
Engine compartment
Symptoms
- Check Engine Light on
- Tachometer not working or displaying incorrect readings
- Transmission shifting problems
- Poor engine performance
Possible Causes
- 1Electrical short or open circuit in the RPM circuit
- 2Damaged wiring or loose connector
- 3Internal fault within the ECU
- 4Tachometer malfunction
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