CAT 3126B Fault Code: 110-00 PID: Flash Code 61 SPN: 110 FMI: 15 High Coolant Temperature Warning
The Boost Pressure signal voltage is below acceptable range.
CAT
CAT 3126B Fault Code: 110-03 PID: Flash Code 27 SPN: 110 FMI: 3 Coolant Temperature Sensor Open Circuit
The engine is running and status of Service Brake #1 Switch indicates the brake pedal has been depressed while Service Brake #2 Switch indicates the pdeal is released.
CAT 3126B Fault Code: 110-04 PID: Flash Code 27 SPN: 110 FMI: 4 Coolant Temperature Sensor Short Circuit
The engine is running and status of Service Brake #2 Switch indicates the brake has been depressed while Service Brake #1 Switch indicates the pedal is released.
CAT 3126B Fault Code: 110-11 PID: Flash Code 61 SPN: 110 FMI: 16 High Coolant Temperature Warning
The Engine Control Module (ECM) detects the following conditions:
•For C7 engines that are not in emergency vehicles, the engine coolant temperature is at least 108° C (226° F) for more than ten seconds.
•For C7 emergency vehicles and for C9 vehicles, the engine coolant temperature is at least 113° C (235° F) for more than ten seconds.
•For C9 emergency vehicles with automatic transmissions, the engine coolant temperature is at least 118° C (244° F) for more than ten seconds.
•The engine has been running for at least 30 seconds.
Note: This diagnostic code represents an event. This diagnostic code does not represent an electronic system fault.
Probable causes:
1) High ambient air temperature or high inlet air temperature
2) Low coolant level
3) Radiator failure or restiction in cooling system
4) Fault water temperature regulator
5) Faulty coolant temperature sensor or circuit
6) Excessive load
CAT 3126B Fault Code: 111-01 PID: Flash Code 62 SPN: 111 FMI: 17 Low Coolant Level Warning
The Engine Control Module (ECM) detects the following conditions:
•For C7 engines that are not in emergency vehicles, the engine coolant temperature is at least 111° C (232° F) for more than four seconds.
•For C7 emergency vehicles and for C9 vehicles, the engine coolant temperature is at least 116° C (241° F) for more than four seconds.
•For C9 emergency vehicles with automatic transmissions, the engine coolant temperature is at least 121° C (250° F) for more than four seconds.
•The engine has been running more than 30 seconds.
Note: This diagnostic code represents a critical event. This diagnostic code does not represent an electronic system fault.
Possible Causes:
1) Low Coolant level
2) Wiring at either ther coolant level sensor, ECM, or in between
3) ECM Failure
CAT 3126B Fault Code: 111-02 PID: Flash Code 12 SPN: FMI: Coolant Level signal invalid
The ECM detects the following conditions:
•The coolant level sensor is sending an invalid signal for more than ten seconds.
•The “Coolant Level Sensor” parameter is programmed to “Yes”.
Probable Causes:
1) ECM Connection/Harness
2) Coolant sensor failure
3) Coolant sensor harness failure
4) ECM Failure
CAT 3126B Fault Code: 111-03 PID: Flash Code 12 SPN: FMI: Coolant Level voltage high
Conditions Which Generate This Code:
This condition occurs when there is an open in the circuit for the “2-wire float sensor”. The “Coolant Level Sensor” parameter must be programmed to “2-wire Float Sensor” before this diagnostic code can occur. If the “Coolant Level Sensor” parameter is programmed to “2-pin switch “, or “4-pin” this diagnostic code is disabled.
The coolant level sensor is installed by the vehicle’s Original Equipment Manufacturer (OEM). This sensor is an optional sensor for “Engine Monitoring”. Engine monitoring is a programmable feature of the Caterpillar Engine Control Module (ECM). The sensor is selectable through a customer programmable parameter and the customer programmable parameter may be protected by customer passwords. Some OEM installed coolant level sensors are not connected to the ECM. Do not confuse an OEM installed coolant level sensor that is independent of engine monitoring with the coolant level sensor that is used for engine monitoring.
The customer programmable parameter for the coolant level sensor can be programmed to “4-Pin”, “2-wire float sensor”, or “2-pin switch”. Also, the customer programmable parameter for the coolant level sensor can be programmed to “NO” if the option for the coolant level sensor is not being used.
If the parameter “Coolant Level Sensor” is programmed to “NO”, the coolant level sensor is ignored by the ECM. Conversely, if the parameter is set, then a sensor must be installed. The coolant level is monitored by the engine monitoring system when the parameter “Coolant Level Sensor” is programmed to “4-Pin” or “2-wire float sensor”.
Probable Causes:
1) Coolant level sensor
2) Coolant level sensor harness/connector
3) ECM Connection
4) Wiring between ECM and coolant level sensor
5) ECM Failure
CAT 3126B Fault Code: 111-04 PID: Flash Code 12 SPN: 111 FMI: 4 Coolant Level voltage low
Conditions Which Generate This Code:
This condition occurs when there is a short in the circuit for the “2-wire float sensor”. The “Coolant Level Sensor” parameter must be programmed to “2-wire float sensor” before this diagnostic code can occur. If the “Coolant Level Sensor” parameter is programmed to “2-pin switch”, or “4-pin” this diagnostic code is disabled.
The coolant level sensor is installed by the vehicle’s Original Equipment Manufacturer (OEM). This sensor is an optional sensor for “Engine Monitoring”. Engine monitoring is a programmable feature of the Caterpillar Engine Control Module (ECM). The sensor is selectable through a customer programmable parameter and the customer programmable parameter may be protected by customer passwords. Some OEM installed coolant level sensors are not connected to the ECM. Do not confuse an OEM installed coolant level sensor that is independent of engine monitoring with the coolant level sensor that is used for engine monitoring.
The customer programmable parameter for the coolant level sensor can be programmed to “4-Pin”, “2-wire float sensor”, or “2-pin switch”. Also, the customer programmable parameter for the coolant level sensor can be programmed to “NO” if the option for the coolant level sensor is not being used.
If the parameter “Coolant Level Sensor” is programmed to “NO”, the coolant level sensor is ignored by the ECM. Conversely, if the parameter is set, then a sensor must be installed. The coolant level is monitored by the engine monitoring system when the parameter “Coolant Level Sensor” is programmed to “4-Pin” or “2-wire float sensor”.
Probable Causes:
1) Coolant level sensor
2) Coolant level sensor harness/connector
3) ECM Connection
4) Wiring between ECM and coolant level sensor
5) ECM Failure
CAT 3126B Fault Code: 111-11 PID: Flash Code 62 SPN: 111 FMI: 18 Low Coolant Level Warning
The Engine Control Module (ECM) detects the following conditions:
•For C7 engines that are not in emergency vehicles, the engine coolant temperature is at least 111° C (232° F) for more than four seconds.
•For C7 emergency vehicles and for C9 vehicles, the engine coolant temperature is at least 116° C (241° F) for more than four seconds.
•For C9 emergency vehicles with automatic transmissions, the engine coolant temperature is at least 121° C (250° F) for more than four seconds.
•The engine has been running more than 30 seconds.
Note: This diagnostic code represents a critical event. This diagnostic code does not represent an electronic system fault.
Possible Causes:
1) Low Coolant level
2) Wiring at either ther coolant level sensor, ECM, or in between
3) ECM Failure
CAT 3126B Fault Code: 128-03 PID: Flash Code 44 SPN: FMI: Secondary Fuel Level voltage high
The ECM detects the following condition:
•The Secondary Fuel Level signal voltage is above the acceptable range for more than 10 seconds.
The fuel level sensors are OEM installed components for the vehicle. The sensors are selectable through a customer programmable parameter and the customer programmable parameter may be protected by customer passwords.
Possible Causes:
1) Loose ECM Connection/Harness
2) Fuel level sensor failure
3) WIring between fuel level sensor & ECM