Question about 2007 Mazda 6 2.3

2 Answers

Had check engine and AT light come on going down hill today. need help diagnosing

The car is complete stock, never had an issue for 5 years. I have performed regular maintenance on it, with transmission flush ever 6 months. My girlfriend was driving it today and it felt like it shifted gears weirdly(her words). I didnt feel like it was that exactly when i had the same thing happen to me when i was checking on it tonight. Trying to figure out what the issue may be. Everytime the car gets turned off the AT light goes off. I had it running for 20 minutes and the light never came on. only when driving. the check engine light remains on at all times

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  • jaycelemmer
    jaycelemmer Oct 31, 2012

    Took it to autozone and the code that is being spit out is P0715 for the input turbine speed sensor. I have heard it is a reasonably easy repair( 30 min) but i can't seem to find the part on autozone and schucks/o'reilly. Autozone couldn't even confirm i had the part in my car. Dealer wants 120 for the part and 154 for install. oy.

  • jaycelemmer
    jaycelemmer Nov 01, 2012

    Took it to the dealer and waived diagnostic testing because of the autozone free test. Had them replace the sensor at a cost of $244. don't know if they forgot to clear the code or if its coming back on for a deeper issue but the transmission was shifting a bit harder than normal from 1st to 2nd still. the check engine light was on when i picked up the car, and the AT light came back on again while driving down hill. I'm officially at a loss of what it could be


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Problem could be the vechicle speed sensor if check engine light comes on when vechicle in motion.have vechicle code scan first to see what code is for buying new parts.

Posted on Oct 30, 2012

  • jaycelemmer
    jaycelemmer Oct 31, 2012

    you were right, took it to autozone and got diagnosed, input turbine speed sensor . now to just find the part

  • Jonah Oneal Oct 31, 2012

    look on front left inner corner of the transmission for in put turbine shaft speed sensor.


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Likely an issue with the transmission. Check the transmission oil level with the engine running. If too high or low, then have a garage check your system. The 6 is sometimes prone to obvious transmission wear around 150,000 plus km.

Posted on Oct 30, 2012

  • jaycelemmer
    jaycelemmer Oct 30, 2012

    Yeah, that's what I'm thinking. it runs normal no engine noise change. i checked the fluid levels. it almost felt like driving over a small pothole or a skipped downshift. like a thud. and only made the one noise


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SOURCE: shifting hard..check engine light always on

hi there, seems like your clutch is going out, and the fuel pump might be going as well, take it to a smog and repair shop or a shop that has an OBD2 reader, they should tell you, should be a charge for it since the thing is hand held and plugs in near your legs, or on the right or left side of the areas, sometimes behind the ashtray, if you look you'll see a odd shaped plug or a cover that says obd...thats how you read your check ingine light codes, usually portains to the smog or emmissions of the car, i have one so they should be able to help you out.....hope this helps you

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SOURCE: Engine shakes when Idling/ Check Engine Light started blinking

i just fixed a similar problem on my van there is a rubber elbow on the end of the pvc hose that connects to the valve cover you can only buy the elbow with the hose and it costs about 100 bucks but i guess they have had to replace a lot of these because the new one looks twice has strong you just have to check and see if its collapsed in on itself preventing air movement or leaking the shop will charge you 175 dollars to fix it plus the part but it only takes 20 minutes good luck

Posted on Jun 20, 2009

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