939005141 - Y007 P0168 - LIMITATION FOR HIGH FUEL TEMPERATURE

The diagnostic equipment signals: Error P0168 (Limit for high fuel temperature)
This error is detected if there is a mechanical problem with the engine or if the system is overheating as a result of overloading The quantity of fuel injected is reduced as a result.
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect the diagnostic equipment and select the Bosch EDC 16C39 electronic control unit, checking that none of the following errors are present:P0180 - Fuel temperature sensorP1612 - Fuel filter heating relay controlMove on to Step 21. Error P0180 present1. Proceed as instructed in the    See Test 1060EA DIESEL FUEL TEMPERATURE CHECK
2. Error P1612 present2. Proceed as instructed in theSee Test 5505AC CHECK DIESEL PREHEATING RELAY
2ENGINE COOLING SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the fuel cooling system is working properlyCheck the engine cooling system is working properly.Check that there are no engine oil leaks and that the engine oil level is correct    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
If all these conditions are followed, the malfunction is caused by poor use of the engine
End of diagnosis1. Malfunction of the fuel cooling system1. Restore the correct operation of the system
2. Malfunction of the engine cooling system2. Restore the correct operation of the system
3. Engine oil leaks3. Continue as instructed in the    See table X12 ENGINE OIL LEAKS
4. Engine oil level beyond permitted limits4. Restore the correct engine oil level    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY