Good morning everyone.
92 jeep Cherokee 4.0 4 x 4 automatic.
I was running around and went through some water a couple of times. Parked and it cut off. No start smell fuel. Check blink codes.
125155
I believe 12 is a code.
51 is another code
55 is end of message.
If that is correct, one of them is an O2 sensor.
Any ideas?

 

51 is the only real code. Oxygen sensor lean.

And an oxygen sensor failure will not cause a crank/no start problem.

Perhaps you need to do this:CRUISER'S MOSTLY RENIX TIPS

CONNECTOR AND RELAY/RECEPTACLE REFRESHING

OCTOBER 30, 2015 SALAD 38 COMMENTS EDIT



I suggest unplugging EVERY electrical connection in the engine bay you can find, whether engine related or not, and spraying it out with a , visually inspecting the terminals making sure they haven’t retracted into the plastic holder, and then plugging it back together.

There’s a critical 10-pin connector for the front lighting system located in front of the air cleaner and behind the left headlight assembly. Don’t miss that one. Also be sure that the connectors to the ballast resistor mounted near the air cleaner housing are clean and tight.

ALL of the relays should be removed, the terminals wire-brushed until shiny, and the receptacles sprayed out with contact cleaner. Then plug them back in. I do this on every Renix Jeep I purchase or work on for someone else.

 

Curious about how this is going too

 

Yes, I have an idea, check for spark and fuel first, then report your results

TPS in particular dont like getting wet either

I remember one guy pressure washed his engine, then complained it wouldnt start, and cant jeeps handle a bit of water

Well not at 1600psi bud lol