Detroit DD13 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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