Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 174
FMI: 3

Description: Supply Fuel Temperature Sensor Open Circuit
Troubleshooting:
DESCRIPTION:
Fuel temperature circuit failed high.
MONITORED PARAMETER:
Fuel temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Faulty wiring.
2. Faulty supply fuel temperature sensor.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 174
FMI: 4

Description: Supply Fuel Temperature Sensor Short Circuit to Ground
Troubleshooting:
DESCRIPTION:
This fault code sets when the motor control module (MCM) detects a short to ground on the
supply fuel temperature circuit.
MONITORED PARAMETER:
Fuel temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Faulty fuel temperature sensor.
2. Faulty electrical connector.
3. Damaged pins.
4. Damaged connectors.
5. Faulty wiring.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 174
FMI: 17

Description: Fuel Temperature Sensor, Minimum Temperature Plausibility
Troubleshooting:
DESCRIPTION:
Fuel temperature sensor plausibility error when compared to other group 3 sensors.
MONITORED PARAMETER:
Fuel temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Engine idle: one minute.
NOTE: During cold ambient temperatures, this fault can be induced if vehicle is equipped with
auxiliary oil or coolant heaters. If unit is equipped with an auxiliary heater, clear fault code and
release. Advise driver of this issue. This is a Malfunction Indication Light (MIL) – only.
fault.
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty electrical connector.
5. Faulty supply fuel temperature sensor.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 175
FMI: 0

Description: Oil Temperature High Warning
Troubleshooting:
DESCRIPTION:
This code sets when the motor control module (MCM) detects high oil temperature.
MONITORED PARAMETER:
Engine oil temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Run the engine at 1200 rpm until coolant temperature reaches 49°C (120°F).
POSSIBLE CAUSES:
1. Low engine oil level.
2. Faulty engine oil temperature sensor.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 175
FMI: 3

Description: Engine Oil Temperature Circuit Failed High
Troubleshooting:
DESCRIPTION:
Short to voltage or open on engine oil temperature sensor circuit.
MONITORED PARAMETER:
Engine oil temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Faulty wiring.
2. Bent pins.
3. Spread pins.
4. Corroded pins.
5. Faulty engine oil temperature sensor.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 175
FMI: 4

Description: Engine Oil Temperature Circuit Failed Low
Troubleshooting:
DESCRIPTION:
This fault code sets when the motor control module detects a short to ground on the engine oil
temperature circuit.
MONITORED PARAMETER:
Engine oil temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Faulty engine oil temperature sensor.
2. Faulty electrical connector.
3. Damaged pins.
4. Damaged connector.
5. Faulty MCM.
6. Faulty engine harness.