Detroit DD15 GHG14 (2014-16) Fault Code: SPN 558 FMI 5 (CPC) Short to Ground or an Open Wire, Idle Validation Switch 2 Circuit Failed Low
NOTE: Please see the step by step troubleshooting procedures for this specific code.
PROBABLE CAUSES:
1. Idle Validation Switch harness.
2. Idle Validation Switch (Mounted on accelerator pedal).
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