Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1645 Information for specific makes
P1645 BUICK
P1645 CADILLAC
P1645 CHEVROLET
P1645 GMC
P1645 HONDA
P1645 HYUNDAI
P1645 LEXUS
P1645 CADILLAC
P1645 CHEVROLET
P1645 GMC
P1645 HONDA
P1645 HYUNDAI
P1645 LEXUS