Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Hello Guys' How are you , Hope Everythings are ok , Im working with 2012 Mazda C-x9 That having a Fault code P219B which is Air fuel Ratio imbalance Bank 2 ,This Car came from another shop and the costumer told me that they replaced sparkplugs clean injectors, The car running fine no misfire at all , So i tried to look at the fault code and erased see if lights come again amd roadtest and light is on again .P219B . I read on the TSB that this fault code you can eliminate by making another line for the signal of 4 oxygen sensor. or on the other words you have to re wire from ECM to Oxygen sensor you can separate this line to the emission control . but idid not yet try it may some you guys encountered this fault code . I much appreciated, Thank you and Godbless
Sounds like TSB 01-027/13 is the one you're referring to.
I've never encountered this code on this YMM before, so I can't say if performing the TSB will help or not. :silly: Before going to all that trouble, I'd want to have a good look at fuel trims and Mode $06 misfire counts. Injector current ramps would also be a good idea, given how often fuel injectors fail on these engines.
Hello my friend Here are some Fuel Trim Result
Long term fuel trim 1 3.9
Long term fuel trim 2 -9.375
Short term fuel trim 1 -2.344
Short Term fuel trim2 25
RPM 602
at idle
STFT 0.78
STFT 0.78
These are the result after I relocate the 3 injectors from left Bank 1 to Right injectors Bank 2 but im not sure if my Idea is good or not im not good or dont know how to read Fuel Trims thats why I put here so you guys understand what are those reading in Fuel Trims Thank you and Gobless
Awesome my frriend Thank you for helping me you said Fuel injectors after I transfer From I Bank 2 Injectors to Bank 1 The Fault code Would Changed tFrom P 219B TO P219A so it means that there is Problems on the injectors . Now I Tried 6 used injectors see if this code Fix ill give you update ,,THANK YOU and Godbless
Hello everyone ! Mazda is FIXED after i Transfer the 3 injectors right Bank 2 to Injectors Left bank 1 so the fault code is change from P219B to P219A SO thanks a lot ScannerDanner for giving me guide how to make this trouble even if im not familiar with those Fuel Trims The costumer is happy after I Fixed his car ..
There was definitely some fuel trim correction going on there, even if there wasn't a misfire present.