Cummins ISB CM850 (2003-06) Fault Code: 1674 PID: SPN: 3249 FMI: 4 Exhaust Gas Temperature 2 Circuit ? Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the catalyst exhaust temperature sensor circuit.
Cummins ISB CM850 (2003-06) Fault Code: 1674 PID: SPN: 3249 FMI: 4 Exhaust Gas Temperature 2 Circuit ? Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the catalyst exhaust temperature sensor circuit.
The catalyst outlet temperature sensor shares return wires in the engine harness with other sensors. A shorted return can cause multiple fault codes to be active.
Possible causes:
1)Signal shorted to ground in the harness
2)Signal shorted to return or ground in the sensor.
On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines):
1)The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
2)The ECM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. The MIL lamp and fault code can also be cleared using the INSITE? service tool.
3)The fault code will be cleared from memory after 40 consecutive drive cycles where the diagnostic runs and passes.
On-Board Diagnostics (OBD) Information (Euro 4 Stage 1+ Certified Engines):
1)The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
2)An engine torque derate will be activated after 50 hours of engine operation with the fault code active.
3)The ECM turns OFF the malfunction indicator lamp (MIL) after 1 ignition cycle that the diagnostic runs and does not fail. The MIL lamp cannot be cleared using the INSITE? service tool.
4)The fault code will be cleared from memory after 400 days or 9600 hours of engine operation.
Possible repairs:
1)Replace the exhaust gas temperature #2 sensor.
2)The removal and installation of the connector may correct the problem.
3)Repair or replace the engine harness.
4)Replace the ECM.
-
John Deere & Hitachi Parts ADVISOR 2020 [08.2020] Offline DVD Spare Parts Catalog
John Deere $120.00Rated 0 out of 5 -
JOHN DEERE SERVICE ADVISOR 5.3.225 DATABASE AG + CF ENGLISH 2023
John Deere $250.00Rated 0 out of 5 -
Detroit Diesel Diagnostic Link DDDL 8.0 PRO PROFESSIONAL Software trucks
Detroit $25.00Rated 0 out of 5
Related products
-
Allison 1000 & 2000 Gen 5 Fault Code:P2641 Torque Management Feedback Signal – LRTP
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2724 Pressure Control Solenoid 1 (PCS1) – Stuck On
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2764 TCC PCS Control Circuit Low
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2763 TCC PCS Control Circuit High
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P0980 Shift Solenoid 3 (SS3) Control Circuit – High
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:U0073 CAN Communication Bus 1 Off
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2789 Clutch Adaptive Learning at Limit
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:U0100 Lost Communication With ECM A
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2761 TCC PCS Control Circuit Open
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P0979 Shift Solenoid 3 (SS3) Control Circuit – Low
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P2684 Actuator Supply Circuit Voltage 3 Open (HSD3)
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P0976 Shift Solenoid 2 (SS2) Control Circuit – Low
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:U0074 CAN Communications BUS 2 Off
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P097A Shift Solenoid 1 (SS1) Control Circuit – Open
1000 & 2000 Gen 5Rated 0 out of 5 -
Allison 1000 & 2000 Gen 5 Fault Code:P0122 Pedal Position Sensor Circuit – Low Voltage
1000 & 2000 Gen 5Rated 0 out of 5
-
SERVICE MANUAL International Engines DT466E & DT530E (1999 & Older)
INTERNATIONAL ENGINES $31.00Rated 0 out of 5