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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications System >> Diagnostic Information and Procedures >> DTC U2099 >> Diagnostic Fault Information
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Serial Data Communication Enable U2099, U0100-U02FF1 U0100-U02FF U0100-U02FF2 -
1 Vehicle will not start.
2 History only. If cleared the DTC will return after several ignition cycles.
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