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P0056
Agency Power catless midpipe installed a little over 1 month ago. Agency Power rear section installed earlier this week. Velos Designwerks Stage 2 tune flashed end of last week.
CEL is on. P0056 is the code. HO2S Heater Control Circuit Bank 2 Sensor 2. CEL has been cleared multiple times and comes back as soon as the car is started.
I've searched for this code on here and found 1 thread discussing it, but couldn't confirm if it's an O2 sensor issue or an air pump issue.
Trying to confirm what the problem item is and hopefully determine if this is something that has been caused by the exhaust install or by the flashed software. The tune has included the option to delete the cold start, but the cold start will not go away. Velos is currently working on that.
Any advice is appreciated.
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2019 M5 : Black Sapphire Metallic / Black Full Merino / Carbon / B&W / Executive / Driving Assistance Plus / BMW Performance Carbon Fiber Front Splitters, Side Skirts, Rear Diffuser, Trunk Spoiler
2020 RDX A-Spec : Apex Blue Pearl / Red
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