Check U1120 Fault Code
When you check engine light came on code U1120 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 U1120 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.
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Parts or components should not be replaced with reference to only a U1120 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. |
U1120 Possible Fix :
If there's a part that needs repairing, leave it to the professionals. Unless of course, you're confident that you can conduct all these repairs at home. You'll need relatively expensive replacement equipment and tools for this though.
U1120 OBD-II Diagnostic Network (U) Trouble Code DescriptionU1120 SCP (J1850) Invalid or Missing Data for Primary Id so you have to check ODB-II Fault Code Check list.Reason For U1120 CodeThe reason of U1120 OBD-II Fault Code Check is U1120 SCP (J1850) Invalid or Missing Data for Primary Id. |
U1120 Solution:
Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.
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What does fault code U1120 mean ?
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How to Clear U1120 Trouble Code
An OBD 2 scanner is the best and safest way to erase a DTC from your car's system. This scanner communicates with the car's computer and instructs the computer to erase the code. It does not change or tweak the settings from inside the car or its systems.