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Help On Emi Light


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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.

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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.

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