OBDI Code 27

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01-18-2014, 12:43 PM

ThatDude114

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Join Date: Oct 2013

Location: Idaho

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Year: 1991

Model: Cherokee

Engine: 4.0 Liter

OBDI Code 27

Okay so after running my Jeep for a couple minutes the CE comes on. I do the key trick and this is what I get 12, 27, 27, 55. The 12 is because of my recent battery disconnect and 55 is the end code. I believe that 27 is an Injector code? But why would there be 2 of them and how do I fix it? The Jeep does kinda idle weird. It'll idle normal and then idle a little higher and then back down, repeat. Thanks for the help guys

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01-18-2014, 02:20 PM

freegdr

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Year: 1989 xj sport 2dr

Model: Cherokee

Engine: 12 hole bosch Injectors

27 Injector circuit isn't switching when it's told to (TBI)
OR (MPI) injector circuit #1 not switching right
OR (turbo) injector circuit #2 not switching right
OR (all 1990-) injector output driver not responding
- check computer, connections

Original is at 1980s Chrysler, Plymouth, and Dodge computer fault codes http://www.allpar.com/fix/80s-codes.html#ixzz2qmd7msry
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