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1997 Buick Lucerne U1128 Fault Code Check

When you check 1997 Buick Lucerne car engine light came on code U1128 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Buick manufacturer may have a different definition for the U1128 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U1128 1997 1997 Buick Lucerne Code Clear

A good ground connection is also extremely important. U1128 1997 1997 Buick Lucerne engine problem because the presence of voltage at the panel harness won't make the panel work if there is a bad ground connection. Since the instrument cluster is mounted in a plastic dash, a separate ground wire or ground circuit through the wiring harness is usually needed to complete the power circuit. Refer again to the wiring diagram to find the ground path, and then check it with your ohmmeter. Do not use a self-powered test light because it cannot measure resistance (any resistance will lower circuit voltage).

1997 Buick Lucerne U1128 OBD-II Diagnostic Network (U) Trouble Code Description

U1128 SCP (J1850) Invalid or Missing Data for Primary Id so you have to check ODB-II Fault Code Check list.

Reason For 1997 Buick Lucerne U1128 Code

The reason of 1997 Buick Lucerne U1128 OBD-II Fault Code Check is U1128 SCP (J1850) Invalid or Missing Data for Primary Id.
U1128 Code Reason

1997 Buick Lucerne U1128 Possibble Fix Ways :

Probably the biggest result of injector failure is due to the injectors having excessive return flow or back leakage. This is due to worn parts which allow excessive fuel to go through the diesel injector and to return back to the tank or fuel system. This causes a drop in rail pressure which results in hard starting or not starting at all.

When you turn on the ignition, the Service Engine Soon or Check Engine U1128 1997 1997 Buick Lucerne light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If U1128 1997 1997 Buick Lucerne so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the U1128!

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