Detroit DD15 GHG14 (2014-16) Fault Code: SPN 2791 FMI 18 (MCM) Smart Remote Actuator 3 (EGR), Learn Span Too Small

DESCRIPTION:
The fault code sets when the motor control module (MCM) detects that the exhaust gas recirculation (EGR) valve position is incorrect.

MONITORED PARAMETER:
EGR position error.

TYPICAL ENABLING CONDITIONS:
Engine running

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
None

VERIFICATION:
Engine idle

NOTE: If any other codes are active, fix those first.

PROBABLE CAUSES:
1. EGR delta p sensor.
2. EGR delta p sensor pressure port.
3. EGR delta p sensor harness/connector.
4. Check EGR system for leaks.
5. EGR valve actuator pull rod.
6. EGR valve.
7. Remove the EGR cooler hot pipe, EGR crossover pipe, and delivery pipe for excessive blockage.
8. Air inlet manifold pressure sensor failure.
9. Air inlet manifold pressure sensor harness/connector.
10. Charge air outlet and/or intake manifold temperature sensor and/or wiring.
11. Performed parked regen.

Related

Categories DD15 GHG14 (2014-16), Detroit, DTC TRUCKS Tags 16, 18, 2014, 2791, 3, Actuator, Code, DD15, Detroit, EGR, Fault, FMI, GHG14, Learn, MCM, Remote, Small, smart, Span, SPN, too

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