garcia26233 Posted December 29, 2009 Share Posted December 29, 2009 Just got my first truck and need some help. I got a 1-1 code and don't know what it means, also I don't know if it's related to that but the EMI light comes on for a second when rpm goes right over 14, I noticed it does it on 8th and last 10th gear. Truck is a 99 CH with a E7. Any help would be great. Quote Link to comment Share on other sites More sharing options...
Underdog Posted December 29, 2009 Share Posted December 29, 2009 Just got my first truck and need some help. I got a 1-1 code and don't know what it means, also I don't know if it's related to that but the EMI light comes on for a second when rpm goes right over 14, I noticed it does it on 8th and last 10th gear. Truck is a 99 CH with a E7. Any help would be great.On my E-TECH engine a 1-1 code indicates a voltage issue with the oil pressure sensor. Oil pressure is probably OK, just an electrical fault with the wiring or sensor. Quote Link to comment Share on other sites More sharing options...
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