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)???
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.