Detroit DD15 EPA07 (2007-09) Fault Code: SPN 103 FMI 1 (MCM) Turbocharger Speed Below Threshold (High Box)
DESCRIPTION:
Turbocharger speed below threshold (high box).
TYPICAL ENABLING CONDITIONS:
Turbocharger speed above threshold.
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
10% derate
PROBABLE CAUSES:
1. Air intake system has leaks – hoses, CAC, etc…
2. Turbocharger speed sensor wiring/connector.
3. Turbocharger speed sensor.
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