Detroit DD15 GHG14 (2014-16) Fault Code: SPN 4374 FMI 1 (ACM) Over Pressurized DEF System
DESCRIPTION:
Over Pressurized Diesel Exhaust Fluid (DEF) System.
MONITORED PARAMETER:
DEF Pump Speed vs. DEF Pressure.
TYPICAL ENABLING CONDITIONS:
1. DEF pump enabled.
2. On-Off-Cycle request.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
2 minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
ADS Self-Check.
NOTE: If any other codes are present, repair them first.
PROBABLE CAUSES:
1. Check connectors & wiring for: DEF dosing unit, DEF pump, Aftertreament Control Module, Chassis/ATS harness wiring/connector.
2. Contaminated DEF tank (Fuel, water, etc…).
3. Doser unit failure.
4. DEF return line failure.
5. DEF tank header failure.
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Volvo Premium Tech Tool PTT 2.8.130 Diagnostic Software 04.2022 ACPI ( 1 PC )
Trucks software $143.00
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