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Code 4B81 - EGR Rate Control - Control Deviation
Got this one tonight. I drove about 7 miles to a nearby Kia dealer, stopped for about 10 minutes to talk to a sales person about a Soul, then headed back down the road about a mile or two to get on the freeway. As I was accelerating slightly more than average to merge into interstate traffic, the old reduced engine power came on. It had been a while, so I had to fumble to find my CAN tool that I have running on the floor by the door to my left, and then I couldn't remember how long to hold the button. Which is all just as well because when I read the code, it was one I hadn't seen before, the 4B81. According to someone's earlier post it is an EGR Rate Control - Control Deviation. I cleared it. We shall see what the future brings, whether this was a one-off or not. I'm at 34K miles.
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2021 X3 M40i: M Sport Differential, Adaptive M Suspension.
Previous BMWs: 1971 BMW 2002, 1973 BMW R75/5, and 2011 BMW 335d
Previous Other Vehicles: '67 Cougar, '70 911e, '86 Jetta Diesel, '05 and '12 Foresters, et al.
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