Detroit DD13 EPA10 (2010-13) Fault Code: SPN 615 FMI 3 (MCM) Axial Power Turbine Air Seal Pressure Regulator Valve Circuit Failed High

NOTE: Please see the step by step troubleshooting procedures for this specific code.

PROBABLE CAUSES:
1. APT air seal pressure regulator valve harness connector or wiring.
2. APT air seal pressure regulator valve.