OJ Avery Posted May 17, 2018 Share Posted May 17, 2018 I have a 12 mp7 in a granite that I keep getting an intake manifold temp sensor code. Occasionally its active. The sensor has been replaced as well as the engine wire harness. Checked my connections and grounds, all good. I took a temp reading on the manifold, 110 and the ptt gave me 124. Thoughts?? Thankyou!! Quote Link to comment https://www.bigmacktrucks.com/topic/53368-mp7-code-spn-105/ Share on other sites More sharing options...
OJ Avery Posted May 17, 2018 Author Share Posted May 17, 2018 I also have a pending code spn 3226 fmi13 after treatment nox cal value out of range... I cannot get nox sensor values in ptt, why? Ive looked at every test in ptt. Quote Link to comment https://www.bigmacktrucks.com/topic/53368-mp7-code-spn-105/#findComment-398967 Share on other sites More sharing options...
Mackpro Posted May 17, 2018 Share Posted May 17, 2018 Pull the intake temp/boost sensor and blow the soot off of it and retry. If no luck I gotta bulletins on SPN 105 FMI 2 . It says to replace turbo wheel speed sensor , doesn't make sense but that's what it said Quote Link to comment https://www.bigmacktrucks.com/topic/53368-mp7-code-spn-105/#findComment-398972 Share on other sites More sharing options...
Mackpro Posted May 17, 2018 Share Posted May 17, 2018 For the Nox code being FMI 13, replace the outlet nox sensor, it will be the one with the black connector . On nox sensors always remember , "Grey in the front and Black in the back". The newest nox sensors have a raised fence around the outside of the body , casted into the housing , remember to do a learned data reset or sensor calibration after changing sensor Quote Link to comment https://www.bigmacktrucks.com/topic/53368-mp7-code-spn-105/#findComment-398973 Share on other sites More sharing options...
OJ Avery Posted May 17, 2018 Author Share Posted May 17, 2018 ok thanks mackpro Quote Link to comment https://www.bigmacktrucks.com/topic/53368-mp7-code-spn-105/#findComment-398974 Share on other sites More sharing options...
Donald smith Posted June 18, 2018 Share Posted June 18, 2018 what does learned data reset do ? Quote Link to comment https://www.bigmacktrucks.com/topic/53368-mp7-code-spn-105/#findComment-400792 Share on other sites More sharing options...
Mackpro Posted June 19, 2018 Share Posted June 19, 2018 The engine ecm in a way , gets to know various sensors and even the injectors and learns their usual readings and characteristics. When you replace one , it's a good idea to do a learned data reset so the ECM can relearn the new sensor . Not to confused with calibration codes which also need to entered when injectors are replaced on a MP engine. On engines sometime around 2014/2015, learned data reset was renamed and moved in PTT. It's under calibrations now and called something like sensor calibrate reset. Kinda confusing. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/53368-mp7-code-spn-105/#findComment-400810 Share on other sites More sharing options...
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