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International Automotive Technicians Network
Re: 5v Ref DTCs On 2003 Malibu
Posted to Technical Discussion Forum on 10/5/2017

[...trimmed text...]

that's not a small glitch .

three options come to mind :

1 : 5v problem internal to the pcm/bad 5v connection 2 : sensor is starting to short to ground/poor connection @sensor(s) 3 : bad ground/b... Login to read more.