Detroit DD15 GHG14 (2014-16) Fault Code: SPN 2659 FMI 18 (MCM) Exhaust Gas Recirculation Flow Target Error Diagnostics – Low Flow

DESCRIPTION:
This fault code sets when the different between the actual EGR flow and the commanded EGR flow is lower than a calibrated threshold.

MONITORED PARAMETER:
EGR mass flow

TYPICAL ENABLING CONDITIONS:
1. Desired EGR mass flow greater than .08.
2. EGR in closed loop control.
3. CAC outlet temperature greater than 0°C (32°F).
4. Engine speed 1080 to 2500 rpm.
5. Engine torque 200 to 2500 N·m (148 to 1844 lb·ft).
6. Coolant temperature greater than 65°C (149°F).
7. Ambient temperature greater than -8°C (18°F) ambient.
8. Barometric pressure greater than 755 mbar (11 psi).

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
20

DASH LAMPS:
MIL

ENGINE REACTION:
None

VERIFICATION:
1. Start engine.
2. Warm up so that coolant temperature is greater than 65°C (149°F).
3. Ensure ambient temperature greater than -8°C (18°F).
4. Ambient barometric pressure greater than 755 mbar (11 psi).

PROBABLE CAUSES:
1. EGR delta p sensor.
2. EGR delta p harness/connector.
3. EGR delta p sensor port.
4. EGR valve.

Related

Categories DD15 GHG14 (2014-16), Detroit, DTC TRUCKS Tags 16, 18, 2014, 2659, Code, DD15, Detroit, Diagnostics, Error, Exhaust, Fault, Flow, FMI, Gas, GHG14, Low, MCM, Recirculation, SPN, Target

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