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P0654 Diagnostic Trouble Code Discussion for May 2013

Engine Speed Output Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0654
Help Request Posted
2004 Chevrolet Silverado 2500 6.0L Misfire VIN: 1GCHK29U54
P0654: Engine Speed Output Control Circuit Malfunction. This truck misfires on cylinder #1 at idle only, hot or cold. Cylinder #8 has less 1/10 the misfire counts. Freeze frame shows DTC set at idle too. I pulled the spark plugs because the customer said they had been changed, he thought with Split-Fire plugs but t...
May 13, 2013