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Fault code: 4770 SCANIA

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Finding the fault code

Enter the fault code





Fault code 4770

For this fault code there are several descriptions depending on the system to which this code refers and its version or version of this system that is installed on the machine

EMS Engine Management System

Fuel supply to cylinders

Error identification:

The signal is missing from the solenoid valve for the fuel quantity to the front bank, cylinders 1-3.


Cause:

Fault on the solenoid valve or open circuit in the solenoid valve circuit.


Notes:

The engine runs very unevenly if the fuel supply to all cylinders is not working correctly.


Action:

Check the circuit components, harness-to-harness connectors and electrical cables. Clear the fault code memory, start the engine and rev it up. Check that the engine is running smoothly and reacts normally to the accelerator. Renew the solenoid valve if the fault persists.

EMS Engine Management System

High pressure solenoid valve

Error identification:

Short circuit to ground in high pressure solenoid valve.


Cause:

Damaged cable harness or harness-to-component connectors.


Notes:

The solenoid valve closes and the engine shuts down when there is no more gas in the circuit.


Action:

Check the electrical cables and harness-to-harness connectors for short circuit. Check the gas shut-off valve.

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