49
Diagnostic Trouble Codes (DTCs)
WARNING! Read the safety instructions for maintenance and service work in the chapter ”Safety
information” before starting to work.
Code 2.1
Cause: Water detected in the fuel or insufficient fuel
pressure.
Response: Alarm indicator lights up.
Corrective action:
•
Check fuel water separator filter (drain the water pre-
sent, also in the fuel tank).
•
Check if it is possible to increase the pressure using
the hand pump.
•
Check the fuel filter.
•
Check the pre-filter.
Code 2.2
Cause: Low coolant level.
Response: The engine shuts down (if this protective fea-
ture has not been disabled by the parameter setting tool).
The alarm indicator lights up.
Corrective action:
•
Check coolant level.
•
Check coolant level sensor.
Code 2.4
Cause: RPM sensor, flywheel.
Response: The engine is very hard to start and runs poor-
ly if it does start.
Corrective action:
•
Check that the sensor connector is engaged correctly.
•
Check the wiring to the sensor.
•
Check that the sensor is located correctly in the
flywheel cover.
•
Check that the sensor is functional.
Code 2.5
Cause: RPM sensor, camshaft.
Response: The engine takes longer than normal to start.
The engine runs normally once underway.
Corrective action:
•
Check that the sensor connector is engaged correctly
•
Check the wiring to the sensor.
•
Check that the sensor is located correctly in the cam
cover.
•
Check that the sensor is functional
Code 2.7
Cause: Throttle potentiometer connected to EMS.
Response: The engine goes to idle. If the pedal is first re-
leased and then pushed down again the engine can be
operated on an emergency basis with the help of the idle
switch. (TAD1240-42GE)
Corrective action:
•
Check that the control’s connector is engaged
correctly.
•
Check that the potentiometer is connected correctly.
•
Check that the wiring to the potentiometer is not
damaged.
•
Check the potentiometer.
•
Check that the 23-pole connector is correctly
assembled.
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