Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1327
FMI: 31
Description: Idle Smoothness Control/Cylinder #5 Misfire at Idle
Troubleshooting:
DESCRIPTION:
This fault code sets when the motor control module (MCM) detects that cylinder #5 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 and 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 FREQUENCEY:
Once per drive cycle when enabling conditions are met.
TYPCIAL DURATION:
Five seconds
DASH LAMPS:
1. CEL
2. MIL
ENGINE REACTION:
25% derate
VERIFICATION:
Ensure the ignition has been off for a minimum of five minutes prior to the last ignition on. Meet
all enabling conditions. Let the engine idle for five minutes. (Fault code status will become
pending with one detected failure and active with the 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 rod.
8. Cylinder liner damage.
9. Piston ring damage.
10. Failed cylinder head gasket.
11. Failed fuel injector.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1328
FMI: 10
Description: Cylinder #6 Misfire Rate Above 5% Detected
Troubleshooting:
DESCRIPTION:
This fault code sets once the motor control module (MCM) detects a misfire on cylinder #6 with
all conditions met.
MONITORED PARAMETER:
Engine rpm
TYPICAL ENABLING CONDITIONS:
1. Engine speed between 500 and 1600 rpm.
2. Engine torque load between 25 and 75%.
3. All cylinders are active, no fault reactions.
4. Engine speed/torque is steady.
5. Coolant temperature is greater than 62°C (144°F) but less than 114°C
(237°F).
6. Fuel temperature is greater than 0°C (32°F) but less than 150°C (302°F).
MONITOR SEQUENCE:
Always when enabling conditions are met.
EXECUTION FREQUENCEY:
Always
TYPCIAL DURATION:
1000 revolutions
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Ensure the ignition has ben off or a minimum of five minutes prior to the last ignition on. Meet
all enabling conditions during a 15 minute road test.
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 rod.
8. Cylinder liner damage.
9. Piston ring damage.
10. Failed cylinder head gasket.
11. Failed fuel injector.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1328
FMI: 31
Description: Idle Smoothness Control/Cylinder #6 Misfire at Idle
Troubleshooting:
DESCRIPTION:
This fault code sets when the motor control module (MCM) detects that cylinder #6 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 and 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 FREQUENCEY:
Once per drive cycle when enabling conditions are met.
TYPCIAL DURATION:
Five seconds
DASH LAMPS:
1. CEL
2. MIL
ENGINE REACTION:
25% derate
VERIFICATION:
Ensure the ignition has been off for a minimum of five minutes prior to the last ignition on. Meet
all enabling conditions. Let the engine idle for five minutes. (Fault code status will become
pending with one detected failure and active with the second)
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 rod.
8. Cylinder liner damage.
9. Piston ring damage.
10. Failed cylinder head gasket.
11. Failed fuel injector.
Page
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1482
FMI: 9
Description: TC1 Message (Transmission Mode) is Missing
Troubleshooting:
DESCRIPTION:
J1939 message is missing.
MONITORED PARAMETER:
J1939 communication
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
None
ENGINE REACTION:
None
VERIFICATION:
Key on, engine off.
POSSIBLE CAUSES:
1. Battery voltage.
2. Faulty Controller Area Network (CAN) line.
3. CPC needs proper configuration.
4. Faulty CPC.