What $7e8 means for a jeep 2007 compass,engine came on checked with scanner and it read $7 E8 and $7E9.what type of problem is that.

SOURCE: 2001 jeep grand cherokee the compass/temp

Before replacing the module ($$$$) check the temperature sensor at the front of the vehicle behind the bumper or grill. A reading of -40 indicates a high resistance (NTC resistor sensor). This is probably due to water ingress on a connector causing the high resistance. But could be a bad sensor too. You can also check the module by unplugging the temperature sensor and shorting the two wires that go back to the module together. Shorting the two wires together should show an off scale high reading like 120 or 130 degrees. If it does then the module is OK the problem is the wiring or the sensor. You can use this method to check the wiring all the way up to the module incase there is high resistance in the wiring between the module and the temperature sensor.

SOURCE: installing new sparkplugs on jeep compass

Gap is the same as original ones...should be on an under-hood sticker...Likely 35.

SOURCE: remove 2007 jeep compass bumper cover

Hello, I can assist you. Begin by rounding up the necessary tools:

7mm socket and ratchet
7mm wrench
10mm socket
screw driver or panel removal tool (for push rivets)
Now go to the following site and take a look at the step by step instructions and pictures which does a nice job of explaining this entire job. Thanks for using Fixya!
http://www.jeeppatriot.com/forum/showthread.php?t=6291

SOURCE: I have a 2007 jeep

"U-codes" (codes beginning with a "U" prefix) are communications faults. Your vehicle is equipped with several computer modules which are all networked to gether on what is called the "Control Area Network" or "CAN". When one of the modules failes to communicate or if there is invalid data being transmitted by one of the modules, a U-code is stored in continuous memory in one or more of the other modules.

In your case, U1403 pertains to invalid or implausible data being recieved from the fuel level sensor by the Powertrain Control Module. Please note that this is NOT a fuel level sensor failure code and does NOT indicate faulty fuel level sensor circuits.

Theory of Operation

The TIPM receives a fuel level signal over CAN B from the Cluster. The TIPM transmits the fuel level message to the PCM over the CAN C bus.

The possible causes of this code are:
> Open or shorted CAN B circuit
> Instrument Cluster (CCN)
> Totally Integrated Power Module (TIPM)
> Powertrain Control Module (PCM)

To properly diagnose tis code, you must use a scan tool to access and verify data on all available modules. You must also determine if this is an active fault or an intermittent fault.

I don't see a fuel level signal problem at the PCM causing your engine to stall. However, the fuel level signal may be getting lost or "scrambled" due to a lack of communications between modules or a malfunctioning module. This could cause all sorts of problems (including stalling).

I would also like to add that my personal experience with this type of problem (communications faults) has taught me that the FIRST thing that should be done is a THOROUGH check of the BATTERY and CHARGING SYSTEM before attempting any communications diagnostics. If your battery is more than 4 years old, it is VERY LIKELY be the ROOT CAUSE of the problem. Computers tend to do all kinds of wierd things when they are not being fed properly.

Testimonial: "Thank you . We now have a place to start."

SOURCE: 2007 jeep compass. compass will start, but will

yake the cover from the stik off,at passanger sideu will see a white paastic that is conected tu a valve ,falow that mecanis and you will get it to a cable that goes all the way up to your egnition ,from the egnision to tha little plasti you will find that the cable is lose or off the track