The Engine Control Module (ECM) detects the following conditions: •The ECM detects a low current condition (open circuit) for one second while the ECM is attempting to energize the solenoid for cylinders 3 and 4.•The engine retarder switch is in the low or high position. Probable Causes: 1) ECM Connection/Harness2) Harness between the ECM and valve cover base3) Engine retarder solenoid failure4) Harness under valve cover5) ECM Failure6) Harness at bulkhead connector CAT 3406E (Prefix 5DS or 1LW) Fault Code: 14 PID: 121 SPN: FMI: 5 Low/High Retarder current low CAT 3406E (Prefix 5DS or 1LW) Fault Code: 13 PID:...

The Engine Control Module (ECM) detects the following conditions: •The ECM detects a low current condition (open circuit) for one second while the ECM is attempting to energize the solenoids for cylinders 1, 2, 5, and 6.•The engine retarder switch is in the medium or high position. Probable Causes: 1) ECM Connection/Harness2) Harness between the ECM and valve cover base3) Engine retarder solenoid failure4) Harness under valve cover5) ECM Failure6) Harness at bulkhead connector CAT 3406E (Prefix 5DS or 1LW) Fault Code: 14 PID: 121 SPN: FMI: 6 Low/High Retarder current high CAT 3406E (Prefix 5DS or 1LW) Fault Code:...

The Engine Control Module (ECM) detects the following conditions: •The ECM detects a high current condition (short circuit) for one second while the ECM is attempting to energize the solenoids for cylinders 1, 2, 5, and 6.•The engine retarder switch is in the medium or high position. Probable Causes: 1) ECM Connection/Harness2) Harness between the ECM and valve cover base3) Engine retarder solenoid failure4) Harness under valve cover5) ECM Failure6) Harness at bulkhead connector CAT 3406E (Prefix 5DS or 1LW) Fault Code: 14 PID: 122 SPN: FMI: 5 Med/High Retarder current low CAT 3406E (Prefix 5DS or 1LW) Fault Code:...

The Engine Control Module (ECM) detects the following conditions: •The 5 volt supply is greater than 5.16 VDC for more than one second.•The ECM has been powered for at least three seconds. Sensors that are regulated with 5V: Boot pressure, atmosphere pressure, engine oil pressure, coolant temperature, intake manifold air temperature, fuel temperature Probable Causes: 1) ECM Connection/Harness2) Sensor Failure3) Sensor wiring failure4) ECM Failure CAT 3406E (Prefix 5DS or 1LW) Fault Code: 21 PID: 41 SPN: FMI: 4 8 Volt Supply voltage low CAT 3406E (Prefix 5DS or 1LW) Fault Code: 21 PID: 41 SPN: FMI: 3 8 Volt...

The Engine Control Module (ECM) detects the following conditions: •The 5 volt supply is less than 4.84 VDC for more than one second.•The ECM has been powered for at least three seconds. Sensors that are regulated with 5V: Boot pressure, atmosphere pressure, engine oil pressure, coolant temperature, intake manifold air temperature, fuel temperature Probable Causes: 1) ECM Connection/Harness2) Sensor Failure3) Sensor wiring failure4) ECM Failure CAT 3406E (Prefix 5DS or 1LW) Fault Code: 21 PID: 232 SPN: FMI: 3 5 Volt Supply voltage high CAT 3406E (Prefix 5DS or 1LW) Fault Code: 21 PID: 41 SPN: FMI: 4 8 Volt...