Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1761
FMI: 1
Description: Diesel Exhaust Fluid (DEF) Tank Level 0 Condition – Empty Tank – Speed Limited
Troubleshooting:
DESCRIPTION:
DEF tank level 0 – empty (speed limited).
MONITORED PARAMETER:
DEF tank level.
TYPICAL ENABLING CONDITIONS:
DEF tank level less than 2.5%.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
10 minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Engine idle (5 minute)
NOTE: This fault indicates that the DEF tank level is empty and the warning lamps have been
ignored. A 25% engine derate and 5 mph speed limit is in effect. DEF must be added to the
DEF tank (minimum 1/4 tank). After refill, idle engine for five minutes; if fault does not go
inactive or dash lamp stays ON, refer to OEM literature for DEF level sensor diagnostics.
POSSIBLE CAUSES:
1. DEF tank level is empty.
2. Warning lamps have been ignored.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1761
FMI: 2
Description: Diesel Exhaust Fluid (DEF) Tank Level Sensor Circuit Data Erratic, Intermittent or
Incorrect
Troubleshooting:
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Faulty DEF tank temperature/level sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1761
FMI: 3
Description: Diesel Exhaust Fluid Tank Level Sensor Circuit Failed High
Troubleshooting:
DESCRIPTION:
Diesel exhaust fluid (DEF) tank level sensor circuit failed high.
MONITORED PARAMETER:
DEF tank level 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:
Engine idle (one minute).
NOTE: When there is no signal from the DEF level/temperature sensor, the vehicle will go into
the low DEF level derate.
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Faulty DEF tank temperature/level sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1761
FMI: 4
Description: Diesel Exhaust fluid Tank Level Sensor Circuit Failed Low
Troubleshooting:
DESCRIPTION:
Diesel exhaust fluid (DEF) tank level.
MONITORED PARAMETER:
DEF tank level 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:
Engine idle (one minute).
NOTE: When there is no signal from the DEF level/temperature sensor, the vehicle will go into
the low DEF level derate.
POSSIBLE CAUSES:
1. Damaged Diesel Exhaust Fluid (DEF) tank temperature/level sensor.
2. Corroded Diesel Exhaust Fluid (DEF) tank temperature/level sensor.
3. Water present in the Diesel Exhaust Fluid (DEF) tank temperature/level sensor.
4. Faulty wiring.
5. Faulty DEF tank temperature/level sensor.
6. Faulty ACM.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 1761
FMI: 9
Description: Diesel Exhaust Fluid (DEF) Tank Signal Not Available Via CAN
Troubleshooting:
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Shorted DEF CAN harness.