DTC P2463 DURAMAX

[harryheard]

2011 LML DMAX 106,000 MILES

cleaning DPF came up for the first time and 3miles later check engine light
ENGINE POWER REDUCED

shows p2463 code

whats going on with this truck ? so far since new ALL SENSORS in emissions system have been replaced , DEF tank and pump as well

what is the most common cause for the p2463 code ??

 

[Jsdirt]

Looks like there's new ECU calibration that addresses this: http://www.autocodes.com/p2463_chevrolet.html

 

Not sure if it can be done with that year model, but if possible, I'd replace the entire exhaust system with something pre '08, and tune that crap right out of the ECU. My dad's '09 was plagued with the same issue about every 200 miles. '05 exhaust system and a tune eliminated that, after he'd already spent over $1k at the dealer. They were more than happy to take his money without offering up any solutions.