Powertrain
generic / SAE
P0654
Engine RPM Output Circuit Open
The engine RPM signal output that the ECU sends to other modules (tachometer, transmission, ABS) has an open circuit.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / 54
Possible causes
- Open in output wiring high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 60–250 €
- Estimated time: 0.3–1.2 h
- Component: engine rpm output
- MIL / check engine light
Sources
References
sae:J2012