SOURCE: fuse box diagram for 1995 jeep grand cherokee laredo. I have the same model Grand Cherokee Limited 5.2L V8, nice truck; for fuse panel description and locations, check page 7 and next. All the infor that you need is here: Jeep-ZJ-Grand Cherokee-Secc-8W-Wiring-Diagrams. An expert that got 5 achievements. Re: what is diagnostic code 22 for a 1994 Jeep Cherokee That code is for the engine coolant temperature sensor. "input above maximum acceptable voltage." I would try a new temp. sensor. If that doesn't fix it, you may need to have an engine scanner hooked up, and see what the sensor is sending to the My engine light tripped and I got po455 (p0455) Gross Evap Leak. In my old Volvo It was a cheap little purge valve Right on top of the engine 20 bucks and no tools needed. When I posted on the Volvo forum I got a half dozen responses immediately, all saying the exact same thing. It was a very well known failure point. P1281 enginlight on - Jeep 2004 Grand Cherokee question. My resources say P1281 is engine is cold too long. That would lead me to possibilty of faulty thermostat, or something else in cooling system. 2004 jeep grand cherokee 4.7 v8 special edition laredo. hard to start, idles rough at about 700rpm, cleaned the throttle, changed tps, good fuel pressure doesnt overheat or have milky oil. Also stalls … read more P0136 definition: H02S2 Heater Control Circuit Low (Bank 2, Sensor 2) Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible. Diagnosis: It is important to complete the entire diagnostic process when diagnosing the P0136 code. over cooling is a sign of a stuck open t-stat (i.e. 150 degrees). the super high temp (i.e. anything over 210/215) at a light or in slow traffic might be a sign of either the electric fan not kicking on or the clutch fan not working correctly. The two-wire coolant temperature sensor tells the Engine Computer what the temperature is. This code will set when the coolant doesn't reach a specific temperature within six minutes of starting the engine. If you start it and let it idle or drive slowly for two or three minutes, you won't reach the temperature in six minutes. SPONSORED LINKS My 2000 jeep Grand Cherokee engine light came on and stayes on. The check engine light wont go off check it with the machine didnt give me a code just showed p1491 what is that please help. Posted by Donald Evans on Apr 03, 2009. I have a 2003 jeep grand Cherokee with the check engine light on. The code is p1281. I replaced the thermoset six months ago . I also replaced the iac motor on the side of the throttle body . I replaced that 4 days ago . The check engine light went off until today . Engine is running ruff and my wife couldn't keep it running . l4eArNc.