NOTE: Please see the step by step troubleshooting procedures for this specific code. PROBABLE CAUSES:1. Failed inlet manifold pressure sensor.2. Inlet manifold pressure sensor connector/harness.3. Charge air cooler failure.

DESCRIPTION:Intake manifold pressure circuit failed low. MONITORED PARAMETER:Intake manifold pressure circuit. TYPICAL ENABLING CONDITIONS:Always on MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 25% VERIFICATION:Parked regeneration PROBABLE CAUSES:1. Failed inlet manifold pressure sensor.2. Inlet manifold pressure sensor connector/harness3. Charge air cooler failure.

PROBABLE CAUSES: For 2007 EPA Engines:1. Engine brake solenoid.2. Short to ground between pin 91 of the ECM 120-pin connector and the valve cover fuel injector harness connector (31-pin connector).3. Short to ground between pin 22 of the 31-pin connector on the vehicle side of he harness and the fan control solenoid.4. Short to ground between pin 93 of the ECM 120-pin connector and the air seal pressure regulator valve cover.5. Failed air seal pressure regulator valve. For 2010 EPA Engines:1. Inspect the connectors on: DEF pump, pressure limiting unit, diffuser heater, and DEF injection valve.2. ACM2 (Aftertreatment Control Module)...

DESCRIPTION:Proportional valve bank 2 circuit failed high. MONITORED PARAMETER:Motor control module (MCM) bank 2 power. TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL VERIFICATION:Engine Idle: One minute. PROBABLE CAUSES:1. Short to power between pin 2 of the rear Jake brake solenoid and pin 62 of the MCM 120-pin connector.2. Short to power between pin 2 of the Electronic Dosing Valve and pin 64 of the MCM 120-pin connector.3. Failed MCM (Engine ECM).

DESCRIPTION:Proportional valve bank 2 circuit failed low. MONITORED PARAMETER:Proportional valve bank 2 circuit. TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:25% Derate VERIFICATION:Ignition Key Cycle. NOTE: Other circuit low fault codes may set as a result of SPN 358/FMI 4. PROBABLE CAUSES:1. Short to ground between the rear valve cover fuel injector harness and the medium (rear) engine brake solenoid.2. Failed EGR valve.3. Short to ground between pin 62 of the 120-pin ECM Connection and the EGR valve actuator/rear valve cover fuel injector harness connectors.4. Short to ground between pin...