Question about 2007 Jeep Grand Cherokee Overland

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ENGINE LIGHT IS ON AND CHECKED IT WITH A CODE MACHINE AND THE CODE IS U1411 U1403

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OP: Posted by Barbara Frye on May 11, 2016
Barbara. get car serviced? at an ASE shop or dealer?
you cant fix this lacking tools, ill not try to guess.
did you first erase those errors (push reset on tool)?
and see if they return, ???? this is first.
have you had work on the pump/tank area.
in a collision?


here is why.
first check fuses. any blown.?
then do the cluster self test, no tools needed.
posted here 100s of time, need that?, or the free link to the test in the FSM book? posted that too 100s of times here. (ask or search)

next is scan it, see all errors, not just the 2 you see now.
a real scan tool shows all errors and for sure those that might be related, and any CAN-BUS errors.
a real scan tool can see all JEEP extended DTC errors.
also post if the instrument cluster is acting odd. in any way.
does the fuel gauge work? can you tell?
needle steady and correct for reality,


QOD: questions of the day,
does engine run?
does car drive, correctly day and night with bright head lights?
does any other feature of the car fail. any at all.
no charge lamp failures in cluster, nor volt meter below 14v in the cluster meter of same name (volts)???

1411
Theory of Operation
The Front Control Module isn't receiving a fuel volume signal over CAN B from the Cluster Module. The FCM has
to send the PCM a fuel volume signal over CAN C. The signal the FCM sends over CAN C is implausible.
my guess is 1403 is the real error. (primary)
the fuel sender might be glitching,

here is that sensor,
in the tank , part of pump, part of fuel rack. in tank.

ENGINE LIGHT IS ON AND CHECKED IT WITH A CODE MACH - 26191729-04vedhgfugfdfyrc0edesdha-4-0.jpg

Posted on May 12, 2016

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U1403-Implausible Fuel Level Signal Received .
u1411-Implausible Fuel Volume Signal Received.

Also it can bean indication of a faulty instrument cluster --
The codes aren't really fuel related.
The codes could be set by problem(s) with these items:
CAN B
CLUSTER MODULE
FRONT CONTROL MODULE (FCM)
POWERTRAIN CONTROL MODULE (PCM).
Do you notice anykind of light flickering on dasboard.
For more details and troubleshooting check the link below:
http://www.allcarhelp.com/2016/05/2007-jeep-grand-cherokee-u1411-u1403.html
This will help.
Thanks.

Posted on May 11, 2016

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Code definition is U1411-IMPLAUSIBLE FUEL VOLUME SIGNAL RECEIVED
Theory of Operation
The Front Control Module isn't receiving a fuel volume signal over CAN B from the Cluster Module. The FCM has to send the PCM a fuel volume signal over CAN C. The signal the FCM sends over CAN C is implausible.
U1403-Implausible Fuel Level Signal Received. I would only guess on this, but you may have a defective fuel level sensor.

Posted on May 11, 2016

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1 Answer

What U1411 code means?


U1411 Implausible Fuel Volume Signal ReceivedPossible Causes Setting Conditions
CAN 'C' Bus circuit is open or shorted to ground
Cluster module has failed
FCM has failed
PCM has failed
Key on or engine running; and the PCM determined that the Fuel Volume signal it received was implausible.
This code sets in 1 Trip(s).
This code will turn on the MIL (Malfunction Indicator Lamp) Vehicle Application: 2005 Jeep Grand Cherokee Laredo 4.7L, Vin N, Eng Cfg V8

Customer Concern: Has 11 codes. U0101, U110C, U0121, P0480, U1120, U0103, U1411, U110E, P000B, U0100, U0002. At this time there is a no crank condition.
Tests/Procedures: 1. Clear the codes and see what comes back. These are all communication codes.
2. Disconnect the modules one at a time when it is acting up and see when the communication comes back.
Potential Causes: Controller Area Network (CAN) C Module

Tech Tips: On this vehicle it turned out the Occupant Restraint Controller (ORC) which is on the Controller Area Network (CAN) B bus was actually causing the problem. It was also taking down the Controller Area Network (CAN) C bus at times. I hope this helps.

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