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2015 Chevrolet Express 3500 LS 6.6L Excessive Emissions, MIL Lamp on, Derated
Posted to GM Driveability on 3/30/2021 6 Replies

came in with a service after treatment message and an MIL on. my tech said it needed the upstream nox and a def tank. replaced both and then the downstream nox and codes keep coming back starting with u029d and then after a few key starts the rest. We have...

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car Vehicle Data

2015 Chevrolet Express 3500 LS

VIN 1GB3G2CL7F
Engine6.6 L / 8 cyl / DIESEL
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp on, Derated
OccursAlways

Trouble Codes

P205Dreductant temperature sensor high
U10E0lost com with def control module
U29D0Lost com with nox sensor 1
Open Help Request

car Vehicle Data

2015 Chevrolet Express 3500 LS

VIN 1GB3G2CL7F
Engine6.6 L / 8 cyl / DIESEL
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp on, Derated
OccursAlways

Trouble Codes

P205Dreductant temperature sensor high
U10E0lost com with def control module
U29D0Lost com with nox sensor 1