I have a 94 jeep cherokee. Inline 6 4.0 liter 4wd and I got the code 125155. I know that 55 is the end of the message and 12 means it has been reset recently and also the air/fuel is at limit. This is told by the code of 51 but I need to know probable causes. I replaced the fuel filter and it was pretty clogged. I miss my jeep and need it fixed soon! I've also done a complete tune up within the month.
Friday, August 3rd, 2012 AT 2:32 AM