The “Truck Manufacturer Parameter” has not been programmed. The parameter must be programmed for the manufacturer of the chassis in order to configure the correct options and ranges for the engine.
Note: The “Truck Manufacturer Parameter” must be programmed before the “Customer Parameters” are programmed.
Probable Causes:
1) ECM not programmed correctly
The Engine Control Module (ECM) detects one of the following items after attempting to operate the injector:
•A low current condition (open circuit) exists in the wiring for the cylinder injector solenoid.
•A high current condition (short circuit) exists in the injector solenoid.
Probable Causes:
1) ECM Connection/Harness
2) Cylinder injector failure
3) Injector solenoid failure
4) Harness from ECM to valve cover connector
5) ECM failure
6) Injector harness under valve cover
The idle timer has expired to stop the engine. NOTE: This diagnostic code represents an event and not an Electronic System fault.
The Personality Module installed is for a different engine than the Personality Module it replaced. NOTICE: Do not attempt to install a 3126 Personality Mofule into a 3116 engine or a 3116 Personality Module into a 3126 engine. Serious engine damage may occur when the engine is started.
The Engine Control Module (ECM) detects one of the following items after attempting to operate the injector:
•A low current condition (open circuit) exists in the wiring for the cylinder injector solenoid.
•A high current condition (short circuit) exists in the injector solenoid.
Probable Causes:
1) ECM Connection/Harness
2) Cylinder injector failure
3) Injector solenoid failure
4) Harness from ECM to valve cover connector
5) ECM failure
6) Injector harness under valve cover
The ECM is not receiving a correct throttle signal
The throttle signal is less than 5% or more than 95%
The Engine Control Module (ECM) detects that the keyswitch was cycled at least three times within one second.
This indicates that the battery circuit to the keyswitch has an intermittent condition or a low battery condition while the engine is running.
Note: This code can be generated by rapidly cycling the keyswitch. Some control modules on the vehicle require this action in order to prompt flash codes. If this occurs, clear the logged diagnostic codes in order to prevent future confusion or an incorrect diagnosis.
Note: This code can also be generated when there is an attempt to restart the engine immediately after a shutdown. The engine may not start if the engine speed did not reach zero rpm prior to the restart.
Probable Causes:
1) ECM Connection/Harness
2) If code 43-2 (Key switch fault) is logged, t/s that code instead
3) Low or excessive ECM power (from battery)
4) Wiring from battery to ECM
5) Keyswitch or keyswitch wiring
6) Aftermarket engine protection switch
The Engine Control Module (ECM) detects one of the following items after attempting to operate the injector:
•A low current condition (open circuit) exists in the wiring for the cylinder injector solenoid.
•A high current condition (short circuit) exists in the injector solenoid.
Probable Causes:
1) ECM Connection/Harness
2) Cylinder injector failure
3) Injector solenoid failure
4) Harness from ECM to valve cover connector
5) ECM failure
6) Injector harness under valve cover
The Speed/Timing signal or Engine Speed/Timing Sensor #2 indicates rpm but timing pattern is lost.