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.

1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	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 control	Move on to Step 2	1. Error P0180 present	1. Proceed as instructed in the    See Test 1060EA DIESEL FUEL TEMPERATURE CHECK
			2. Error P1612 present	2. Proceed as instructed in theSee Test 5505AC CHECK DIESEL PREHEATING RELAY
2	ENGINE COOLING SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	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 diagnosis	1. Malfunction of the fuel cooling system	1. Restore the correct operation of the system
			2. Malfunction of the engine cooling system	2. Restore the correct operation of the system
			3. Engine oil leaks	3. Continue as instructed in the    See table X12 ENGINE OIL LEAKS
			4. Engine oil level beyond permitted limits	4. Restore the correct engine oil level    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY