I changed a part based on a code [what do you think happened?]

In this part 2 of 2 series we address a downstream O2 heater circuit fault (new sensor) as well as revisit the fuel trim data where we find a problem 00:00 - link to part 1    • Misfiring Cylinder - Is It Spark, Fuel, or...   01:51 - trouble codes P0036 P0054 02:23 - warning on downstream sensor location 03:25 - visual inspection of O2 harness 04:18 - wiring diagram for O2 heater circuit 05:17 - testing the circuit with a voltmeter 08:00 - wiring repair 09:46 - normal voltage and current measurements 13:00 - revisiting the fuel trim data from part 1 14:45 - miscalculated alcohol % 16:10 - fuel trims before reset 17:10 - purge valve strategy with misfire 18:14 - fuel trims after resetting alcohol % 18:47 - SD Premium https://www.scannerdanner.com/join-sc... 📘 Want to Learn More About Diagnostics? Check out my field manual, Engine Performance Diagnostics, available as both an eBook and paperback at: 👉 https://linktr.ee/scannerdanner 🔧 Looking for Deeper Training? Whether you're a DIYer, an aspiring tech, or a professional looking to sharpen your skills, join ScannerDanner Premium for next-level diagnostics training: 👉 Join Here – 14 Days for $1 https://www.scannerdanner.com/join-sc... On ScannerDanner Premium, you'll get: *In-depth classroom lectures straight from my book *Exclusive case studies with live vehicles pulled into class *Real-time troubleshooting using proven methods *Post help requests on our forum *Fundamental training on diagnosing automotive electrical and electronics systems. ScannerDanner Tools: https://linktr.ee/scannerdanner ⚠️ Disclaimer: ScannerDanner LLC is not responsible for misuse, unauthorized changes, or incorrect application of any information provided. Always follow proper safety protocols when using tools, equipment, or procedures discussed in this video. Use this content at your own risk.