Detroit DD15 GHG14 (2014-16) Fault Code: SPN 1325 FMI 31 (MCM) Idle Smoothness Control/Cylinder #3 Misfire at Idle
DESCRIPTION:
This fault code sets when the motor control module (MCM) detects that cylinder #3 has low rpm speed with the injector commanded to max fueling for a count of two with all conditions met.
MONITORED PARAMETER:
Engine rpm
TYPICAL ENABLING CONDITIONS:
1. Engine speed steady between 600 to 950 rpm.
2. Engine coolant temperature between 65°C (149°F) and 114°C (237°F).
3. Engine fuel temperature between 0°C (32°F) and 150°C (302°F).
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Once per drive cycle when enabling conditions are met.
TYPICAL DURATION:
5 seconds
DASH LAMPS:
1. CEL
2. MIL
ENGINE REACTION:
25% Derate
VERIFICATION:
Ensure the ignition has been off for a minimum of 5 minutes prior to the last ignition on. Meet all enabling conditions. Let the engine idle for 5 minutes. (Fault code status will become pending with one detected failure and active with second).
NOTE: Do not use the idle speed balance (ISB) test in the diagnostic service tool for any misfire at idle testing.
POSSIBLE CAUSES:
1. Valve lash out of adjustment.
2. Valve train damage/failure.
3. Bent valve.
4. Valve face/ seat damage.
5. Stuck Jake brake.
6. Bearing failure.
7. Bent connecting rob.
8. Cylinder liner damage.
9. Piston ring damage.
10. Failed cylinder head gasket.
11. Failed fuel injector.
PROBABLE CAUSES:
1. Cylinder kit failure.
2. Valve train failure.
3. Lash adjustments.
4. Fuel injector.
5. High pressure fuel line (rail to fuel injector).
6. Debris entering fuel injector.
7. Fuel quality.
Note: If 1322-31 active, fix that first.
Related
-
DOWNLOAD NISSAN UD DIESEL PC-CONSULT DIAGNOSTIC 1.1.13 & PC-REPROMASTER 1.2.0
NISSAN UD $100.00Rated 0 out of 5 -
JOHN DEERE SERVICE ADVISOR 5.3.225 DATABASE AG + CF ENGLISH 2023
John Deere $250.00Rated 0 out of 5 -
CAT Engine Reprogramming Tool for flash programming C1.8, C2.4, C3.8 & C3.3B + Guide
CAT $50.00Rated 0 out of 5
Related products
-
Allison 1000 & 2000 Gen 4 Fault Codes: U2105 CAN Bus ECM Error
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P2810 Solenoid G Electrical
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U0032 J1850 (Class 2) Serial Data Communication Link High
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0871 Transmission Pressure Switch Solenoid E Circuit Stuck Open
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P2771 Four-Wheel Drive Switch Circuit
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1041 J1850 (Class 2) ABS Controller State of Health Failure
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1000 Class 2 Loss of Serial Data Communication
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0876 Transmission Reverse Pressure Switch Circuit Stuck Open
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U2104 CAN Bus Reset Counter Overrun
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0870 Transmission Pressure Switch Solenoid E Circuit
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1300 J1850 (Class 2) Serial Data Communication Link Low
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0875 Transmission Reverse Pressure Switch Circuit Malfunction
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0846 Transmission Pressure Switch Solenoid D Circuit Stuck Open
1000 & 2000 Gen 4 $50.00Rated 0 out of 5
-
SERVICE MANUAL DETROIT DIESEL DD15 , DD13 Service Workshop Repair Manual
DETROIT $25.00Rated 0 out of 5 -
SERVICE MANUAL Eaton Gen III Automated TransmissionsTRSM0930 EN-USOctober 2020
TRUCK MANUALS $24.00Rated 0 out of 5