20 Most Recent 2005 Jeep Compass - Page 6 Questions & Answers

B1S1 is Bank 1 sensor 1 which means bank 1 is the side of the engine with the # 1 cylinder and would be the 1rst or closest sensor in the exhaust to that side of the engine

my driverside headlight stopped working, the bright will work but not the dim. fuses and power was good, do you think it could be same solution to my prob?

The Left Turn signal is DARK GREEN/RED
The Right Turn signal is WHITE/YELLOW
The Left Brake light is WHITE/ORANGE
The Right Brake is WHITE/RED
The High-Mount Brake lamp is DARK GREEN/WHITE

Now, with all that said, your Jeep should be already equipped with trailer wiring unless you have the cheapest model of Jeep Liberty available. I would check your Owner's Manual on the subject.

Also, your rear lighting is controlled by the Body Control Module (BCM) and the signal and brake inputs/outputs are all transmitted to the Instrument Cluster Module for your lamp-out warning system. Anything you connect to this wiring can adversely affect BCM function or can cause your lamp out warning to malfunction and come on all the time. I would use extreme caution unless you really want to destroy some HIGH DOLLAR electronics in your vehicle.

"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.

Multimeter or a simple hateful tester will do the trick ur car off should read 12 amps with it running anywhere from 13.5 to 14.00 is the right amps

Your Jeep Compass does not have a cabin filtration filter.