10 Ways To Fight and Beat California DUI Charges Bad stop by law enforcement officer. … Objective Signs of Intoxication. … Faulty Field Sobriety Tests. … Inaccurate Preliminary Alcohol Screening (PAS) … Rising BAC Level. … GERD Defense for DUI. … Faulty Breathalyzer Test. … Improper Administration of a Blood Test or Protocol. More items… • Dec 7, 2016