Hey Reddit, while endlessly scrolling through LinkedIn for a job, I caught myself wondering: could a single post here actually get me hired at Google or Meta?
Please internet do your thing
Hi I want to order two pretty ordinary parts from a reseller in Japan to China on Ebay, is it possible? Is it easy? Someone did it already? It’s OEM mazda parts
Hey guys,
Two weeks ago, my car threw the engine light with the error code P0421: Warm up catalyst efficiency below threshold (Bank 1). At first, I thought it was just the lambda sensors. My mechanic (whom I trust completely) and I checked the live data at 3,000 RPM, and the readings weren't good.
We then pulled out the MAF (Mass Air Flow) sensor and noticed it was a Toyota part. At first, we thought that was fine, because as long as the cross-reference part numbers match, you can use a Toyota sensor on a Mazda. However, while the correct OEM sensor that fits the NC should be 22204-21010, the one currently installed on my car is actually 22204-22010 (as you can see in the picture).
So Maybe these two sensors have entirely different internal calibrations. We can make a case where it was sending the wrong airflow data, the ECU was likely running the engine way too rich/poor (idk), which means unburnt fuel was entering the exhaust, overheating, and potentially damaging the catalytic converter and the lambda sensors?
Should I replace the MAF sensor first? Also, how can we be absolutely sure that this specific reference (-22010) is wrong for the car's ECU calibration?
Thanks a lot! Waiting to see what are you recommending me to do.
Ps: air intake is modified it’s an AEM kit (last owner put it a few years ago I guess) the car is in my possession ~1.5 years. I don’t feel the car weak (maybe it is and I never really drove it fixed? My mechanics says it must be weak and not full power with these datas..