Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 168
FMI: 2
Description: Ignition Circuit Voltage Erratic
Troubleshooting:
NOTE: This fault indicates the CPC3 has detected erratic voltage on pin 3 of the CPC3
connector #5.
POSSIBLE CAUSES:
1. Bent pins
2. Spread pins
3. Corroded pins
4. Faulty wiring
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 168
FMI: 5
Description: Battery Voltage Open Circuit Pin 5/9
Troubleshooting:
DESCRIPTION:
Common powertrain controller (CPC) Battery voltage open, connector 5, pin 9.
MONITORED PARAMETER:
CPC battery voltage.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
10 seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Engine running
POSSIBLE CAUSES:
1. Bent pins
2. Spread pins
3. Corroded pins
4. Faulty wiring
5. Faulty CPC3
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 168
FMI: 7
Description: Opt Idle Detected Charging System or Battery Failure
Troubleshooting:
DESCRIPTION:
Battery voltage low failure.
MONITORED PARAMETER:
MCM battery voltage.
TYPICAL ENABLING CONDITIONS:
1. Key on
2. Engine off
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
10 seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Faulty power circuit wires.
2. Faulty power circuit connector.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 168
FMI: 9
Description: Battery Connection Lost
Troubleshooting:
DESCRIPTION:
Battery voltage missing.
MONITORED PARAMETER:
Motor Control Module (MCM) battery voltage.
TYPICAL ENABLING CONDITIONS:
1. Key on
2. Engine off
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
10 seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Faulty power circuit wires.
2. Faulty power circuit connector.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 168
FMI: 14
Description: Optimized Idle: Charging System or Battery Failure
Troubleshooting:
NOTE: This is an information fault. The CPC3 has detected a battery/charging system failure
while operating in optimized idle mode. When this fault is detected, the engine will continuously
run while optimized idle is activated. Refer to original equipment manufacturer (OEM) literature
for battery and charging system diagnostic.
POSSIBLE CAUSES:
Battery/charging system failure
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 168
FMI: 18
Description: Battery Voltage Low
Troubleshooting:
DESCRIPTION:
Battery voltage low failure.
MONITORED PARAMETER:
Motor Control Module (MCM) battery voltage.
TYPICAL ENABLING CONDITIONS:
1. Key on
2. Engine off
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
10 seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Faulty wire.
2. Faulty connector.