The Engine Control Module (ECM) detects the following conditions: •The signal voltage from the atmospheric pressure sensor is less than 0.2 VDC for more than 30 seconds.•The ECM has been powered for at least two seconds.•The engine is not running or the engine has been running for more than ten seconds. Probable Causes: 1) ECM Connection/Harness2) Crankcase breather plugged3) Pressure sensor4) Pressure sensor harness5) ECM Failure CAT 3406E (Prefix 1MM or 2WS) Fault Code: 26 PID: SPN: 108 FMI: 3 Atmospheric Pressure voltage high CAT 3406E (Prefix 1MM or 2WS) Fault Code: 25 PID: SPN: 102 FMI: 7 Boost Pressure...

The Engine Control Module (ECM) detects the following conditions: •The signal voltage from the engine coolant temperature sensor is greater than 4.95 VDC for more than eight seconds.•The ECM has been powered for at least two seconds.•The engine has been running for more than seven minutes. 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: 26 PID: SPN: 108 FMI: 4 Atmospheric Pressure voltage low CAT 3406E (Prefix 1MM or 2WS) Fault Code:...

The Engine Control Module (ECM) detects the following conditions: •The signal voltage from the engine coolant temperature sensor is less than 0.2 VDC for more than eight seconds.•The ECM has been powered for at least two 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: 27 PID: SPN: 110 FMI: 3 Coolant Temperature voltage high CAT 3406E (Prefix 1MM or 2WS) Fault Code: 26 PID: SPN: 108 FMI: 4 Atmospheric Pressure voltage...

The ECM detects the following conditions: •The duty cycle for the accelerator pedal position sensor is less than 5 percent or the duty cycle is greater than 95 percent for more than two seconds.•The ECM has been powered for at least three seconds. Probable Causes: 1) ECM Connection/Harness2) Accelerator Position Sensor3) Accelerator Position Sensor Harness4) ECM Failure CAT 3406E (Prefix 1MM or 2WS) Fault Code: 27 PID: SPN: 110 FMI: 4 Coolant Temperature voltage low CAT 3406E (Prefix 1MM or 2WS) Fault Code: 27 PID: SPN: 110 FMI: 3 Coolant Temperature voltage high CAT 3406E (Prefix 1MM or 2WS) Fault...

The Engine Control Module (ECM) detects the following conditions: •The duty cycle of the signal for the PTO throttle is less than 5 percent or more than 95 percent for more than two seconds.•The PTO Configuration is programmed to “Remote Throttle”.•The ECM has been powered for at least three seconds. Probable Causes: 1) ECM Connection/Harness2) Accelerator Position Sensor3) Accelerator Position Sensor Harness4) ECM Failure CAT 3406E (Prefix 1MM or 2WS) Fault Code: 29 PID: SPN: 30 FMI: 8 PTO Throttle signal invalid CAT 3406E (Prefix 1MM or 2WS) Fault Code: 28 PID: SPN: 91 FMI: 13 Throttle Sensor out of...