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Fel kod U3FFF - Cars & Trucks

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Get error code u3fff (with code reader in "freeze frame") Also get code p1652 powertrain induced chassis pitch output circuit


code p 1652 refers to engine control relay --open circuit/short circuit to ground ===causes --wiring open circuit/ short circuit to ground---connectors ---engine control relay---ECM

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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.

Apr 21, 2013 | 2000 Lincoln Navigator

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Dodge ram trouble code u3fff


there is a code table here: code table
hope it can help you and good luck

Jan 28, 2013 | 2006 Chevrolet Aveo

1 Answer

U3fff code


goto autozone/orielly and have them reset the code for free. Or you can remove your battery for about 5 mins and it should clear the code. Good Luck!

Jun 11, 2012 | 1997 Infiniti.5 Q45

1 Answer

Has rough idle, engine light on, codes P0303 and U3FFF. Have had installed new coil pack and new injector on cyclinder 3, same problem persist.


check spark plug and wire
test oxygen sensor
check compression ( valve might be at fault)
have computer checked

Jul 05, 2010 | 2005 Jeep Grand Cherokee

1 Answer

Hello a got a chevrolet 2500 pu 1992 it just stop and a look at the kods and find kod 21 dont now what it means


That code means, throttle position sensor (signal voltage high)
I hope this helps.

Aug 14, 2009 | 1992 Chevrolet C/K 2500

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