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Check U1002 Fault Code

When you check engine light came on code U1002 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the U1002 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U1002 Code Reason

Parts or components should not be replaced with reference to only a U1002 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

U1002 Possible Fix :

The engine relies on the glow plugs to generate heat to help with the combustion cycle. Some engines only use the glow plugs when cold but others will allow the glow plugs to work when the ECU (vehicle's computer) needs them to be on to help with combustion. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold.

U1002 OBD-II Diagnostic Network (U) Trouble Code Description

U1002 SCP (J1850) Invalid or Missing Data for Primary Id so you have to check ODB-II Fault Code Check list.

Reason For U1002 Code

The reason of U1002 OBD-II Fault Code Check is U1002 SCP (J1850) Invalid or Missing Data for Primary Id.

U1002 Solution:

The firing order is an important part of the overall design of the engine and is determined during the design of the engine to eliminate as much engine vibration as possible. If the firing order is changed or adjusted, the ignition from the spark plug is delivered at the wrong time and the engine functions poorly or does not run. The firing order for a particular engine is typically found in the repair manual specific to that model.

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