07-up MINI Cooper/Cooper S (R56)
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Error Codes

Old 03-09-2019, 12:01 PM
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Join Date: Mar 2019
Location: Northampton
Posts: 2
Smile Error Codes

Hi Guys n Gals
newbie here, I`ve searched but can`t find any threads on my problem, so, here we go, my wife bought an R56 Cooper S which is running lumpy, we have had the codes read at the local Indie and came up with the following, P28B1 (Blow off valve) which is the diverter valve or so I`ve been told, so I`ve changed it and still nowt, runs exactly the same, when I took off the old one, I noticed the wiring wasn`t connected, so when I fitted the new one, I connected it up, it now seems to run a bit worse! Any pointers please? PS: The garage also came up with P2f22 (engine temp plausability) I`m thinking Thermostat? and P2A74/P2A7F Oxygen sensor after cat aging, so I`m assuming I will have to change it also, sorry for the essay Rob
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