The Engine Control Module (ECM) detects the following conditions: •The signal voltage from the fuel temperature sensor is less than 0.2 VDC for more than eight seconds. Probable Causes: 1) ECM Connection/Harness2) If code 232-3 or 232-4 (5 Volt Supply voltage codes) are active, troubleshoot those instead3) Temperature sensor failure4) Temperature sensor harness5) ECM Failure CAT 3406E (Prefix 1MM or 2WS) Fault Code: 12 PID: SPN: 111 FMI: 4 Coolant Level voltage low CAT 3406E (Prefix 1MM or 2WS) Fault Code: 12 PID: SPN: 111 FMI: 3 Coolant Level voltage high CAT 3406E (Prefix 1MM or 2WS) Fault Code: 12...

The Engine Control Module (ECM) detects the following conditions: •The signal voltage from the fuel temperature sensor is less than 0.2 VDC for more than eight seconds. Probable Causes: 1) ECM Connection/Harness2) If code 232-3 or 232-4 (5 Volt Supply voltage codes) are active, troubleshoot those instead3) Temperature sensor failure4) Temperature sensor harness5) ECM Failure CAT 3406E (Prefix 1MM or 2WS) Fault Code: 13 PID: SPN: 174 FMI: 3 Fuel Temperature voltage high CAT 3406E (Prefix 1MM or 2WS) Fault Code: 12 PID: SPN: 111 FMI: 4 Coolant Level voltage low CAT 3406E (Prefix 1MM or 2WS) Fault Code: 12...

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 1MM or 2WS) Fault Code: 13 PID: SPN: 174 FMI: 4 Fuel Temperature voltage low CAT 3406E (Prefix 1MM or 2WS) 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 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 1MM or 2WS) Fault Code: 14 PID: SPN: 121 FMI: 5 Low/High Retarder current low CAT 3406E (Prefix 1MM or 2WS) 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 1MM or 2WS) Fault Code: 14 PID: SPN: 121 FMI: 6 Low/High Retarder current high CAT 3406E (Prefix 1MM or 2WS) Fault Code:...