BMW M3 Forum (E90 E92) - View Single Post - P0020

agl1911 · 07-16-2018, 12:54 AM

Hi everyone, new to the E9x M3 platform. I picked up a 2008 E90 M3 with relatively low mileage for its age (49K). The car has been sitting for a while probably only been fired up 4 times in 3 months.

I had to replace a Throttle actuator on bank 1 just the other day (my first DIY on the car) and the error cleared however after an hour or so of driving it is now throwing P0020: Camshaft Position Actuator A - Bank 2 Circuit malfunction. As it stands, the car feels fine no rough idle or harsh starts etc. seems 100%. Anyone have an idea on how to troubleshoot fix this as a DIY? I searched the forums and Google and didn't find much. Anyone have any input or ideas?

07-16-2018, 12:54 AM	#1
agl1911 Enlisted Member 3 Rep 32 Posts Drives: 2008 E90 M3, NC miata Join Date: Feb 2018 Location: Socal iTrader: (0)	P0020 - Increased Emissions Hi everyone, new to the E9x M3 platform. I picked up a 2008 E90 M3 with relatively low mileage for its age (49K). The car has been sitting for a while probably only been fired up 4 times in 3 months. I had to replace a Throttle actuator on bank 1 just the other day (my first DIY on the car) and the error cleared however after an hour or so of driving it is now throwing P0020: Camshaft Position Actuator A - Bank 2 Circuit malfunction. As it stands, the car feels fine no rough idle or harsh starts etc. seems 100%. Anyone have an idea on how to troubleshoot fix this as a DIY? I searched the forums and Google and didn't find much. Anyone have any input or ideas?
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