e39 BMW Check Engine Code P0021

After feeling a misfire and getting a check engine light on my 2003 BMW 540, I investigate what codes are stored in the computer. Code P0021 was the code. Newer version of the scan tool from Harbor Freight: https://www.harborfreight.com/zr15s-o... As an Amazon Associate I earn from qualifying purchases. Timex Weekender watch https://amzn.to/4eVS4KY Mountain Metric Wrenches https://amzn.to/3KCqbJT Bentley Service Manual https://amzn.to/4cPWQb9 Bosch Wiper Blades https://amzn.to/3KWh7Qg Milwaukee ratcheting screwdriver https://amzn.to/431B3rD GoPro https://amzn.to/3NxozlJ Joby GorillaPod https://amzn.to/3NvF2a5 LED light https://amzn.to/44mQueY Disclaimer: I'm not a mechanic, this video is for entertainment purposes only.