Fault Code Lookup › Network codes › U0002

U0002 Network · generic OBD-II

High Speed CAN Communication Bus (Performance)

U0002 is a standard code covering network: communication between the car's control modules. It names the system that logged the fault, not the part that failed. Below: which cars owners reported it on, what happened, and recalls on those cars, from 10 complaints filed with NHTSA. Updated November 9, 2026.

Owners also write it as U000288 (the last two characters are the sub-code).

  • 10owner reports
  • 8car models
  • 0mention a crash
  • 0mention a fire
  • 2012–2023model years

Which cars get code U0002?

Every model whose owners mentioned U0002 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.

Where does U0002 show up?

By brand

  • Jeep6
  • Dodge3
  • Ram1

Component the owner filed it under

  1. Electrical System6 (60%)
  2. Power Train4 (40%)
  3. Service Brakes4 (40%)
  4. Steering2 (20%)
  5. Engine2 (20%)
  6. Air Bags1 (10%)

Is there a recall for U0002?

The others concern the component owners file this code under (Electrical System) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.

Electrical System: Instrument Cluster/Panel Chrysler (FCA US, LLC) is recalling certain 2020-2024 Jeep Gladiator and 2018-2024 Jeep Wrangler vehicles. The instrument panel cluster may experience an internal short circuit and fail. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 101… NHTSA campaign 24V652000 · September 5, 2024 · Affected cars

2023 Jeep Gladiator. Full risk and remedy on each car's report.

Electrical System: Wiring: Rear Compartment/TrunkPark outside Chrysler (FCA US, LLC) is recalling certain 2014-2016 Jeep Cherokee vehicles equipped with a power liftgate. An electrical short in the power liftgate module may lead to a vehicle fire with the ignition on or off. NHTSA campaign 23V338000 · May 11, 2023 · Affected cars

2014 Jeep Cherokee. Full risk and remedy on each car's report.

Electrical System: Wiring: Front Underhood Chrysler (FCA US LLC) is recalling certain 2018 Jeep Renegade, Compass and Grand Cherokee, RAM 1500 and Promaster, Fiat 500x, Dodge Journey, Challenger, Charger and Durango and Chrysler 300x vehicles, 2017-2018 Jeep Wrangler, Dodge Grand Caravan and Chrysler Town and Country vehicles and 2018-2019… NHTSA campaign 18V524000 · August 9, 2018 · Affected cars

2018 Jeep Cherokee. Full risk and remedy on each car's report.

Electrical System: Wiring Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler… NHTSA campaign 18V332000 · May 17, 2018 · Affected cars

2018 Jeep Cherokee, 2014 Jeep Cherokee, 2015 Dodge Durango, 2014 Jeep Grand Cherokee. Full risk and remedy on each car's report.

Electrical System: Alternator/Generator/Regulator Chrysler (FCA US LLC) is recalling certain 2014 Dodge Challenger, Charger, Durango, Chrysler 300, and Jeep Grand Cherokee vehicles equipped with a 3.6L engine and a 160 amp alternator. In the affected vehicles, the alternator may suddenly fail. NHTSA campaign 17V741000 · November 21, 2017 · Affected cars

2014 Jeep Grand Cherokee. Full risk and remedy on each car's report.

Electrical System: Alternator/Generator/Regulator Chrysler (FCA US LLC) is recalling certain model year 2011-2014 Dodge Challenger, Dodge Charger, Chrysler 300, Dodge Durango, and 2012-2014 Jeep Grand Cherokee vehicles. The affected vehicles have electro-hydraulic power steering (EHPS) and are equipped with a 5.7L or a 3.6L engine and a 160, 180 or… NHTSA campaign 17V435000 · July 10, 2017 · Affected cars

2013 Dodge Charger, 2012 Dodge Charger, 2014 Jeep Grand Cherokee. Full risk and remedy on each car's report.

Electrical System: Alternator/Generator/Regulator Chrysler (FCA US LLC) is recalling certain model year 2011-2014 Dodge Charger Police vehicles, 2007-2013 RAM 3500 Cab Chassis, 2008-2013 RAM 4500 and 5500 Cab Chassis, and 2013 RAM 2500 and 3500 vehicles. The affected vehicles have a 220 amp alternator that may suddenly fail. NHTSA campaign 16V739000 · October 13, 2016 · Affected cars

2013 Dodge Charger, 2012 Dodge Charger. Full risk and remedy on each car's report.

Electrical System: Alternator/Generator/Regulator Chrysler Group LLC (Chrysler) is recalling certain model year 2011-2014 Chrysler 300, Dodge Charger, Challenger, and Durango; and 2012-2014 Jeep Grand Cherokee vehicles manufactured April 22, 2010, to January 2, 2014, and equipped with a 3.6L engine and a 160 amp alternator. In the affected… NHTSA campaign 14V634000 · October 8, 2014 · Affected cars

2013 Dodge Charger, 2012 Dodge Charger, 2014 Jeep Grand Cherokee. Full risk and remedy on each car's report.

What happened when owners saw U0002?

10 of the 10 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.

WHEN DRIVING MY 2013 DODGE CHARGER SE ALL OF THE LIGHTS FLASHED ON THE DASH AND THE AUTO TRANS WOULD NOT SHIFT OUT OF 1ST GEAR . I RAN MY OBD2 AND IT GAVE A TROUBLE CODE OF U0002 HIGH SPEED CAN BUS. IT THEN STALLED ON THE HWY AND I ABOUT CRASHED THE VEHICLE DUE TO NOW POWER STEERING OR BRAKES. IT IS NOW IN THE SHOP AT 125.00 PER HOUR AND THE DODGE DEALERSHIP HAS NO IDEA WHAT IS WRONG EITHER. IT WILL NOT START AT ALL. NO CRANKING NO NOTHING.
2013 Dodge ChargerElectrical System, Unknown Or OtherNHTSA complaint 11089704 · Apr 23, 2018
Service Air Bag Light came on three different times when turning left. The third time it came on the vehicle died in the middle of an intersection and dashboard lights lit up. Took vehicle to Dealer, they said there were codes and a star case S1808000180, they tore apart center console. Did not find a problem, they test drove car and said no more codes. I picked up vehicle and after driving approx. 30 miles home, service air bag light came on again while stopped at light and car died. Car was towed to second dealer, codes popped up U0103, U11DE, U0002, U1465, C10CD. Dealer did not know how to fix. Called Jeep customer cares. Car has been out of service since May 13, 2022. Going to a third…
2018 Jeep CherokeeElectrical System, Air BagsNHTSA complaint 11467230 · Jun 2, 2022
TRANSMISSION WILL NOT SHIFT TO ANY GEAR.SEAT BELT ON DOORS ALL CLOSED ,ONLY HAD ONE CODE RELATED LAST YEAR SHIFT MODULE U0002-88, SENT TO DEALER ,SAID NO CODES,I NEVER ERASED CODES,THIS HAS BEEN TO DEALERSHIP SO MANY TIMES I DONT KNOW HOW MANY,SAID ITS CUSTOMER ERROR. BULL (@#$%).IF CHRYSLER CANT FIX IT,THEY SHOULD BUY THIS JUNK BACK.
2015 Dodge DurangoPower TrainNHTSA complaint 11331338 · Jun 28, 2020
…A diagnostic scan retrieved multiple communication-related fault codes, including U0002-00 (CAN Bus Off), U0121-00 (Lost Communication with ABS Module), U0129-00 (Lost Communication with Brake System Control Module), U1110 (Lost Vehicle Speed Message), U1120 (Lost Wheel Distance Message), U1141 (Lost Brake and Torque Message), and U12A8 (Lost Communication with Master Cylinder Pressure Sensor). The problem is intermittent, often clears after restarting, and is difficult to diagnose. Because it affects critical safety systems while the vehicle is in motion, I believe this represents a serious safety
2019 Jeep CompassElectrical System, Unknown Or Other, Service BrakesNHTSA complaint 11748014 · Jul 2, 2026
The vehicle suffered a catastrophic, systemic high-speed CAN C data bus loop collapse (Diagnostic Trouble Code U0002-00 "Bus Off"), resulting in an immediate, total loss of communication across almost all primary factory control modules—including the Body Control Module (BCM), Powertrain Control Module (PCM), Transmission Control Module (TCM), and ABS gateway. The vehicle is completely immobilized. This specific network data loop shares an exact architectural footprint and physical circuit link with the high-current electrical defects targeted under active, open Federal Safety Recall Campaign 21D (NHTSA Campaign 21V-363) for this VIN. The franchise dealership (Jacksonville CJDR) is actively…
2023 Jeep GladiatorSteering, Electrical SystemNHTSA complaint 11744215 · Jun 15, 2026
While driving at about 50 mph, the transmission shifted into neutral and would not allow me to shift it back into drive while moving or stopped. This put me in a very dangerous situation as I was in traffic and in the left lane on a 4-lane road. After about 10 minutes of the engine being shut off, it started again and ran just fine. A check engine light did come on, giving error code P0205 and U0002-88 when scanned. I believe the latter code is a stored code from a previous issue. No warning lights were on immediately prior to the incident. This is the second time it has happened in the span of about 4 months. The mechanic was not able to diagnose the cause after the first occurrence. After…
2014 Jeep Grand CherokeePower Train, EngineNHTSA complaint 11579071 · Mar 23, 2024
…ABS Module DTC's: -C2200 -U0100 -U0141 -U0126 -U0002 While scanning the module comes and goes offline.
2016 Jeep WranglerService Brakes, EngineNHTSA complaint 11721623 · Mar 3, 2026
Service ESC flashing on the dash intermittently. If I am in cruise control when it happens vehicle abruptly disables cruise control. Codes when ready are U0002 and U0212. Same problem happened about a year ago, dealer reflashed ABS and sent me on my way. I informed them of other similar trucks experiencing the same issue and that it wasn't a reflash issue. Had them document my concerns that it would just happen again after warranty...I was right.
2019 Ram 2500Electrical System, Vehicle Speed Control, Service BrakesNHTSA complaint 11603764 · Jul 22, 2024
WE BOUGHT THIS VEHICLE ON MAY 6 , 2013, TWO HOURS LATER THE CHECK ENGINE LIGHT WENT ON. TOOK IT TO AUTOZONE AND HOOKED IT TO THE COMPUTER SAID IT WAS THE TRANSMISSION. PROCEEDED TO TAKE IT TO THE DEALER ON MAY 7TH 2013 WHERE THEY RAN A TEST AND FOUND CODE P0741 -U0002- CHECKED FOR CONTAMINATED FLUID, RELEARNED TRANSMISSION SERVICED TRANSMISSION, RESET COMPUTER. THE CAR WAS IN THE SHOP AGAIN ON MAY 30TH 2013 FOR THE PASSENGER SIDE WINDOW (ELECTRICAL). WE GOT THE CAR BACK ON JUNE 1ST 2013 AND THE WINDOW DID NOT WORK SO AS WE WERE WAITING FOR MONDAY JUNE 3RD TO TAKE IT BACK TO THE SHOP, THE CHECK ENGINE LIGHT CAME ON AGAIN. WE ARE WAITING TO HEAR FROM THE DEALERSHIP AS TO WHAT IS WRONG THIS…
2012 Dodge ChargerPower Train, Electrical SystemNHTSA complaint 10515526 · Jun 6, 2013
IT VIBRATES IT REVS UP WHEN IN GEAR IT SHAKES CODE U11C2,U0001000,U04200,U010100,U000288,U012100. *TR
2014 Jeep CherokeeSteering, Power Train, Service BrakesNHTSA complaint 11132945 · Oct 2, 2018

U0002: questions drivers ask

What does code U0002 mean?

U0002 is a generic OBD-II network code. Its standard definition is "High Speed CAN Communication Bus (Performance)". The code tells you which system set the fault, not which part failed; the owner reports on this page show what it meant in practice for 8 car models.

Which cars get code U0002 most often?

In NHTSA owner complaints, U0002 is mentioned most for the Dodge Charger (2), Jeep Cherokee (2), Dodge Durango (1), across 8 models and model years 2012 to 2023. Popular models collect more reports because more of them are on the road.

Is there a recall for code U0002?

No NHTSA recall text names U0002 directly. 8 recalls on the cars that report this code concern the same component owners name most (Electrical System); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.

What should I do if my car shows U0002?

Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.

How this page was made

CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of U0002 (including sub-code forms such as U000288). The definition is the generic SAE J2012 wording; a carmaker may use the code slightly differently. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.

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