Question about 1997 Infiniti.5 Q45

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Trouble code u3fff and cruise control inop

While driving down the interstate hwy my cruise control just cut off and i cant get it to work ,what could my problem be? also while checking for codes u3fff came up on the scanner can you tell me what this is.

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6 Suggested Answers

  • 277 Answers

SOURCE: poor fuel mileage, cruise control inop, a/c inop

First reaction to this one is;-

Engine Oil, Fuel ,Air and OIL Filter change, check and gap, or replace Spark plugs, then comeback later with the Results and continue on from there, with the other problems, No point in having CC and A/c, if the car is running junk on gas miles per gallon.

Regards, DT

Posted on Aug 25, 2009

robshow
  • 367 Answers

SOURCE: 2004 KIA Optima

Check the fuses for these items they could be blown.

Posted on Jan 07, 2009

  • 206 Answers

SOURCE: Cruise control inop

Could be a bad vacum dump switch on the brake pedal. There is 2 switches on the brake pedal one for brakes lights and one for cruise The cruise switch must be pushed when the pedal is up. Or your servo under the hood is bad To identify the parts go to the parts store and look at them and you will know what to look for

Posted on Mar 29, 2009

  • 708 Answers

SOURCE: cruise coontrol inoperative

check your fuses. If it quit working immediately after the recall work then you need to take it back and make them fix it.

Posted on Oct 07, 2009

mrgreenz
  • 962 Answers

SOURCE: 2003 expedition cruise control inoperative no

Check the speed sensor at the tranny or near left front tire. Use a manual or find the location on the net. This sensor usually causes problems with the cruise control.

Posted on Nov 20, 2009

johnjnail
  • 1702 Answers

SOURCE: 2005 Ford taurus cruise control inoperative.

there are 4 fuses that are used to power up different parts of the cruse system all are in the inside fuse box ( under the left side of the dash ) fuse #32 10amp, fuse #27 10amp, fuse #17 15amp, fuse #38 15amp, the main unit fuse is the #32.

hope this helps.

Posted on Mar 12, 2011

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1 Answer

Code U3FFF


U codes are communication faults between the different modules present on your vehicle. The PCM has to maintain control via separate modules that monitor and control every aspect of it, from engine and emission control,transmission control, anti-lock, traction control, lighting, hvac, suspension control, etc...To diagnose these codes requires a quality scan tool and a technician who is experienced with these systems.

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How to fix cruise control


Cruise controls can cease to engage if the clutch or brake light cruise switch are out of adjustment. If this happens, try placing you foot under the clutch pedal (if equipped) and lift up on it (toward you) and hold it while engaging the cruise. If it now works, it will likely cut out when you remove your foot from under the pedal. Check the brake pedal in an identical fashion. Adjusting the switch at the pedals can often solve he problem. Some vehicles (Honda, Acura, Ford, to name a few) have a plastic insert that mounts in the pedal arm which presses against the switch. These can become brittle and fracture into pieces. My Acura has little pieces of blue plastic on the floorboard around the brake pedal one afternoon and I noticed the cruise didn't work. It was the pieces of the insert that had come to pieces preventing the cruise from coming on. I replaced the insert and no more problem with the cruise.

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I have a 2004 Isuzu Axiom, my check engine light came on as i was on the interstate with my cruise control on. The cruise control stop working exactly the same time the engine light came on. I took it to...


You may have actually had a faulty MAP that needed replace. Thing is that any time you get a "check engine", the cruise will be disabled. you must clear the code, by either a trouble code diagnostic tool, or disconnect the battery for about five minutes. Codes will clear, and cruise will start working again.

Nov 19, 2010 | 2004 Isuzu Axiom

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How to figure out problem with Cruise Control for repairing system myself?


the biggest thing with cruise control is to make sure all teh brake lights work. They shut the cruise down is inop

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Speedometer, Odometer, Trip Odometer stopped working


yes the transmission speed sensor has most likely failed, to confirm this have a trouble code test run

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