× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: P2127 code on 2007 Saturn Ion 2.2
Posted to Technical Discussion Forum on 8/19/2020 145 Replies

Hi Louis,

[...trimmed text...]

This can happen if the APP2 does not have a good ground circuit. It needs the ground to "pull down" the 5V to a lower voltage.

[...trimmed text...]... Login to read more.

145 Replies Received (View Replies)