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International Automotive Technicians Network
2020 Honda Odyssey EX-L 3.5L State emissions
Posted to Asian Driveability on 4/8/2026 4 Replies

Hello fellow technicians! This is my first help request here and I hope I have given all info needed. The vehicle is a 2020 Honda Odyssey that will not communicate with the State of Illinois Emissions equipment. This is the only concern as there are no war...

4 Replies Received (View Replies)

  Related Documents & Media  2020 Honda Odyssey EX-L

 
Message Closed w/FIX

car Vehicle Data

2020 Honda Odyssey EX-L

VIN 5FNRL6H78L
Engine3.5 L / 6 cyl / GAS
Trans1-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsState Emissions
OccursAlways

Trouble Codes

U129EF-CAN Malfunction PGM-FI
Message Closed w/FIX

car Vehicle Data

2020 Honda Odyssey EX-L

VIN 5FNRL6H78L
Engine3.5 L / 6 cyl / GAS
Trans1-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsState Emissions
OccursAlways

Trouble Codes

U129EF-CAN Malfunction PGM-FI