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2019 Chevrolet Silverado 2500 HD LTZ 6.6L Service DEF message
Posted to GM Driveability on 5/31/2024 5 Replies

Will not complete reductant bay tamper test or whatever the other one is called. message will not clear and it has already been driven to the point it is limiting MPH to 55. DEF tank pressure passes, Both NOx sensors pass within range. After completing the...

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car Vehicle Data

2019 Chevrolet Silverado 2500 HD LTZ

VIN 1GC1KUEY3K
Engine6.6 L / 8 cyl / DIESEL
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsService Def Message
OccursAlways

Trouble Codes

P2BAAExhaust NOX Concentration High - Low Reductant Consumption
Open Help Request

car Vehicle Data

2019 Chevrolet Silverado 2500 HD LTZ

VIN 1GC1KUEY3K
Engine6.6 L / 8 cyl / DIESEL
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsService Def Message
OccursAlways

Trouble Codes

P2BAAExhaust NOX Concentration High - Low Reductant Consumption