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  1. YF (2011-2014) Sonata/i45
    It just happened while driving down the highway so I pulled over and restarted. The gear Indicator came back but the light remained and the gear Indicator disappeared again. The car also seemed to shift harder...not thumping but louder. Was wondering what could be causing this and my OBDII...
  2. AD (2017-2020) Elantra
    I have a 2017 Hyundai Elantra SE and last week I was on the highway, going up a hill (long but not very steep), and the car started shuddering, and as I suspected, my OBD2 scanner showed cylinder 1 misfiring. So I pulled off to the shoulder, waited a couple minutes and started the car again...
  3. NF (2006-2010) Sonata
    Have a 2009 sonata limited v6 3.3, replaced both coolant sensors and oil temp sensor. Re-pinned pigtail @ top coolant sensor..... check engine light back on. Ac runs cold now but fan constantly runs and check engine light is back on. Anyone have any ideas or thoughts.... I'd love to blow it...
  4. NF (2006-2010) Sonata
    girlfriend has a 2007 sonata with an 08 2.4 that her sisters "mechanic" swapped into it. well anyways, we took it to get an emissions test today because its almost due and the shop we went to claims they cannot communicate with the computer and the check engine light does not cycle on and off...
  5. LF (2015-2019) Sonata/i45
    So I bought my 2016 Hyundai Sonata plug in hybrid with 117k miles used in September 2020. It’s now February 2021. The day after I got the car home the two lights came on. Took to the dealer. Paid $480 for some faulty sensor In rear. Went to pick up car, lights came on again. After two more weeks...
  6. LF (2015-2019) Sonata/i45
    Hi, My 2015 Sonata [2.4L] auto is showing checking engine light. [Around 40K miles] OBD device showed error code P0010. Is this covered in 10 year warranty ? Error message: Camshaft position CMP actuator, intake/left/front, bank 1 - circuit malfunction. When I took it to dealership, the check...
  7. YF (2011-2014) Sonata/i45
    I was already on my consumption test and the dealer told me it was a quart low when I saw them last. The car was due for an oil change so they drained and refilled with conventional 5W20. Less than 1000 miles later, I'm driving home and at lower gears (3rd and 4th I believe) and high speed...
  8. MD (2011-2016) Elantra sedan/coupe
    My check engine light turned on and using my OBD2 i got code P0420 -Catalyst system efficiency below threshold (Bank 1) . I tested my O2 sensors and they are reading fine, Sensor one is jumping between .1 and .9 while O2 sensor 2 is holding steady at around 750 (between 735 -765). The CAT temps...
  9. LF (2015-2019) Sonata/i45
    I stopped this afternoon and filled the tank of my Sonata and I later noticed that my check engine light is on. I did notice that the filler cap does not click when I screw it back onto the filler neck. I do know that there is a label stating that I should tighten the cap until one click is...
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