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Reduced Engine Power

9678 Views 7 Replies 2 Participants Last post by  drewactual
Just bought this truck a month ago. I get the reduced engine power message with the wrench. But the trucks power isnt reduced. I can still drive it with no issue. If I restart the truck, the message will not come back for a few days. Scanner says p00B7. Some people tell me its the thermostat and some say my dpf is clogged. Not sure what to believe. Looking for a second opinion before I go ahead and replace the thermostats myself. Truck is a job 2 08 with 100k miles on it, bone stock.
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No, the code is p00B7, low coolant flow I believe it says. It doesnt do this when I start it up, I drive it 30 minutes to work and 30 minutes home and usually it will not happen for about 4 days, then all of a sudden on my way home while driving it will come up. I continue to drive home with no issues. When I get home and turn the truck off, it wont come back for 2-4 days of driving it again.
The code ALWAYS comes back tho, this isnt the first time its done this. This code returns pretty much every 2 - 4 days. Ironically thats about when the truck regens as well. Maybe it is something dpf related.
Since the truck just hit 100k, I have plans to do dpf delete, egr delete, intake, tune for the deletes/intake, water pump, radiator hoses, thermostats. Should be a nice little update for the truck. Hopefully it takes to it well. Thanks for the advice though! Im thinking one of the thermostats is the problem child as well.
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