Let's have a look at this Kia Sedona with a 3.5 that came in with the engine light on and had what appeared to be a crank sensor code at first. We end up looking at what is referred to as an Ignition Failure Sensor. A failed "failure" sensor... how ironic.
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49 thoughts on “Kia sedona: p0320 igniton failure sensor diagnostics”
  1. Avataaar/Circle Created with python_avatars Commenter says:

    I know it is old video, but if you still want to understand what that functional description meant – look up how PLC reads the 4-20 milliamps analog signal in automation. It usually have 250 Ohm resistor connected across both ends of the current loop, and when current changes then the voltage drop across that resistor is changing. So basically that description you posted was a description of the signal interpretation inside the ECM.

  2. Avataaar/Circle Created with python_avatars John E. Carr says:


  3. Avataaar/Circle Created with python_avatars Michael Emerson says:

    Eric, curiosity got me. My question is if you buy and trade in your Verus or other scopes, do you lose your library of known good or bad wave forms or can you download your library to your new machines?

  4. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Interesting how waveforms are the same Other than the old being 4v to 12v and the New one being 0v to 12v the Voltage range is interesting for sure nice catch Eric O on the ignition failure sensor @SouthMainAutoRepairLLC

  5. Avataaar/Circle Created with python_avatars Todd Hepp says:

    Thanks a million Eric! I followed the diagnosis and repair instructions in this video to successfully repair my 2005 Kia Sedona for $13 (replacement Ignition Failure Sensor part from Amazon) and 30 minutes of my time. Didn't even get grease on my hands. Wow! What a catch. Knowing is more than half the battle. Engine running smooth as silk for a month now. Tachometer fine. Nailed it. YouTube rocks. Question: Do you save marriages too?🙌

  6. Avataaar/Circle Created with python_avatars R. Weaver says:

    Electrical prophylactic…

  7. Avataaar/Circle Created with python_avatars Jimmie Bigthumb says:

    I enjoy watching U Tube.

  8. Avataaar/Circle Created with python_avatars manuel molina says:

    i have a car with this problem on my shop thanks for tip..

  9. Avataaar/Circle Created with python_avatars Andy Clemente says:

    That's a wtf way to see your rpm in the tachometer

  10. Avataaar/Circle Created with python_avatars CHAMAN JESUS says:

    Thank you for this video It's helping a LOT

  11. Avataaar/Circle Created with python_avatars nycelixer says:

    I currently have a sedona that only has spark at cylinder 1.. there's no spark from any other cylinder. If I move the other coil to cylinder 1 it'll have spark. I've replaced cam, crank & misfire sensor and still no start. I also have injector pulse and fuel pressure. Any ideas?

  12. Avataaar/Circle Created with python_avatars Radamanthys J.M says:


  13. Avataaar/Circle Created with python_avatars Donnie Robertson says:

    Great job again second time

  14. Avataaar/Circle Created with python_avatars TinaMarie Black says:

    I have to thank you so much sir. I've spent over $1000 in past 2 1/2 months 6 different mechanics watched this video. Guess what my mom mobile is back running. She does have slight hesitation when accelerating. Cleaned MAF sensor may change and do throttle position. Not unless you have possible suggestions.

  15. Avataaar/Circle Created with python_avatars Kevin Berg says:

    The ignition failure sensor on these is a leftover from Mitsubishi and their old/original OBD2 stuff (the early Hyundai V6s were old Mitsu engines). It's basically just a current sense resistor hooked to a transistor that is tuned to switch when the ignition coil draw passes a preset current value. It's a pretty crude way of making sure the coils are drawing enough current to potentially make a spark (part of the early misfire detection). The Mitsubishi versions don't seem to fail often the Korean copies do.

  16. Avataaar/Circle Created with python_avatars Kui Ramos says:

    Yup, bought the ignition misfire sensor now. Let's see what happens

  17. Avataaar/Circle Created with python_avatars Kui Ramos says:

    Hi Eric, I have a '05 Sedona. Changed out the throttle sensor (engine ran rough, then died out after) ran OK after. Then all of a sudden, idle ran down to 500 rpm, almost to dying out. FixD said Code 0350 (ignition coil primary/secondary circuit). I changed out then my battery, Mass air flow sensor, front three spark plugs and the first three ignition coils, MAP sensor. Still giving me this code. Going to change out the back three spark plugs and wires and crank Camshaft sensor soon. Though I've spend $100 on all these changes, they are new for this vehicle at 95k miles, better than quoted $400 to fix. But still runs rough. Internet says to last change out the PCM, which is my last option is want to do ($100 new on eBay).
    Two ?s: 1) thoughts of what I should do next if you were in my spot, 2) the replacement parts I bought were from eBay, does it really make a difference if I bought a clone at $10 sensor vs. another listed as a OEM at $50 part??

  18. Avataaar/Circle Created with python_avatars England Prowler says:

    Why 2times cf youtube now

  19. Avataaar/Circle Created with python_avatars Steven Olsen says:

    I've got the code but no problem with my tach. General description of the code also mentions low battery voltage, so I'm starting there.

  20. Avataaar/Circle Created with python_avatars Zadquiel Ricaurte says:


  21. Avataaar/Circle Created with python_avatars CARDINAL DOM says:

    Good video. Please where is the fuel rail pressure sensor located?

  22. Avataaar/Circle Created with python_avatars Jason Voorhees says:

    nice work. currently trying to diagnose an issue with our 04 Sedona. no codes checked it today, seems like a mild misfire. when I accelerate it backfires into the manifold & at idle it slightly fluctuates & runs rough.

  23. Avataaar/Circle Created with python_avatars Wrestling Ernest Hemingway says:

    DUDE YOU ARE SO AWESOME FOR POSTING THIS VIDEO!! THANK YOU THANK YOU THANK YOU SO VERY MUCH!!! Your video here saved me a bunch of money. Thank you so much to Buy South Main Auto Repair LLC merchandise and YouTube. By posting and watching this my fiend that is a mechanic was able to fix my 2004 Kia Amanti check engine light problem and find the part for less than $20 including shipping & handling. My problems started about 4 years ago with it showing me I had a EVAC problem code. All my friend would do is rest the code and it would turn off the "Check engine" light long enough for me to pass the smog test. However after driving after a month or 2 the light would come back on eventually. Kia Dealership said the evaporation canister was probably empty and needed to be replaced to make it able for me to have my smog pass. NOT TRUE! All I needed was the check engine light to go off to pass smog. Anyways, later this problem you describe in the video here (including the tac not working) became also a problem with the electronics that would not let me turn off the check engine light. No way to pass smog that way. Anyways, your video here is AWESOME and solved the issue altogether and I'm good again to go for my next smog check. It worked after first start of the engine after replacing this part. I might still have an empty evac canister or cracked EVAP canister issue but the car runs fine now and all is good again. And for this make and model and year, stupid KIA made 6 different evac canisters for the same year make and model. How dumb is that? And to replace the canister, the cost for any of the 6 canisters ranges from $200 all the way up to $800 depending on what canister KIA put in the car. And the only way to find that out is to pull out the entire gas tank to get to the part. Lame. Anyways this video was awesome and I just wanted to say THANK YOU VERY MUCH FOR POSTING THIS!

  24. Avataaar/Circle Created with python_avatars JoeJ94611 says:

    Not only does Eric know the old school mechanical side, he's familiar with the computer control side as well.I like the way he is able to manipulate quickly the scantool's display of a waveform to help him diagnose a problem.

  25. Avataaar/Circle Created with python_avatars Precillia Medina says:

    My speedometer doesn't work it's not showing on my Dash but Eco on it showing on my Dash what does that mean

  26. Avataaar/Circle Created with python_avatars Ralf Kramden says:

    I guess Kia is having lawyers write their service manuals

  27. Avataaar/Circle Created with python_avatars Mike Chiodetti says:

    Ya gatta love those external "Tach Drivers!" As my former coworker used to say….."Easy Money!"
    I think I remember seeing something like that on my wife's 06 Kia Sorento. Right on top of the upper intake plenum. Real nice environmental area!

  28. Avataaar/Circle Created with python_avatars AngeredKabar says:

    Dont feel bad about the bad translation. I work on Korean and Japanese CNC machines all day and all my manuals are like that. Sometimes the electrical prints arent even translated and I have to draw characters and run them through google translate.

  29. Avataaar/Circle Created with python_avatars Drizz_215 says:

    Thank you you awesome great I can do this tomorrow 💆‍♂️💆‍♂️💆‍♂️

  30. Avataaar/Circle Created with python_avatars John Ferguson says:

    The KIA Whisperer . I don't know if that's an honor or a curse.

  31. Avataaar/Circle Created with python_avatars Ashley Hawkins says:

    Thank you. I'm working on a2005 amanti with the same problem except with intermitant rpm meter issue. It throws the p0320 as well and stumbles briefly and so does the rpm gauge. We were getting ready to pull the camshaft sensor. We'll check the voltage first at this sensor. Thank you.

  32. Avataaar/Circle Created with python_avatars jim cooley says:

    Eric, how much is your upcharge on parts for customers or do you charge what the price says online & just make money off the part from your discount from the parts store?

  33. Avataaar/Circle Created with python_avatars jorge cortez says:

    This video helped me fix my 05 sedona, it showed misfires on every cylinder and as soon as the tachometer started acting up it would stutter almost to a halt. I replaced the ignition misfire sensor and it solved the problem..
    Thank you for posting this video!!

  34. Avataaar/Circle Created with python_avatars Inca Pachacutec says:

    Hi I have kia Sedona 05 I am having and issue with ignition ,first start good after motor warm up won't start till motor cool down it happened 3 times , I replaced ignition coils because one of them was leaking voltge but right now I am having this problem.

  35. Avataaar/Circle Created with python_avatars Darren P says:

    Here is my Kia experience. Anyone in my position has encountered the same thing from Kia. If you cannot supply them with up to date maintenance records on your vehicle they will not cover it. So for instance, if you change your own oil you're screwed. Might work if you saved all your receipts but very few people are in the habit of saving receipts of them doing their own oil changes. This ploy Kia uses is well documented if you want to look it up, I have, and it’s out there. Also my car would be covered under the SC147 recall as the symptoms of my engine seizing up (engine needs replaced) followed the exact same symptomology as those the manufacturing defect notes in the recall. The recall notice even appears on my Carfax report. Again you can find all the recall information online. The reason my car isn't part of the SC147 recall according to Kia is because it is MPI instead of GDI. All the rest of the engine is the exact same, 2.4L theta II. Kia says that because my car uses a different kind of fuel injection method that it cannot be affected by the metal filings left in the engine block which is what the SC147 recall is all about. That's totally absurd on its face but that's Kia's position. The vehicles Kia did recall was done after many government threats as well as numerous lawsuits brought by disgruntled Kia owners for which there are many. Kia's mother company, Hyundai actually recalled their vehicles for the same problem immediately when the issue was discovered. It took Kia several years later to admit to the problem and issue a recall even though they were well aware of the problem. Where was Kia's concern for people being killed due to this manufacturing defect? A car having its engine seize up on the interstate would be something that would concern most companies immediately but not Kia. Unless Kia completely changes the way it does business they will continue to cost consumers thousands of dollars for defective cars and probably end up killing people due to their own negligence. I had to argue, write emails, file complaints with various entities, etc just to get Kia to actually LOOK at my engine at no cost to me to determine the how and why of the engine failure. Kia refused to cover my car even though it is under warranty and furthermore refused to even LOOK at my car to see what caused the failure. I'm still waiting for a callback from Kia with their assessment. Kia actually agreed to take my valve cover off to take a look at my car once I complained as high up as I could to Kia. This was after several months of my car sitting dead on the Auffenberg Kia lot in Metro east St Louis. Kia actually told me I'd have to pay $1500 up front to have my engine failure looked into initially. My constant pressure on Kia finally got them to say they would take my valve cover off for no fee which costs Kia less than $50 in labor. Kia had no desire whatsoever to know what caused my engine to seize up. Their ONLY concern was to avoid any acknowledgement of any responsibility or liability. Kia already knew what caused the engine to fail. The same thing that happened to hundreds of thousands of the same engines made by Kia and Hyundai. It was the exact same problem as the Kia SC147 recall. Taking the valve cover off will not help. There was no oil leak. No oil smell. Never any indication of any problem with the valve cover. It's simply a ploy for Kia to say we looked at your engine and it's your fault. Who would trust their assessment at this point anyway? I'm out thousands of dollars I still owe on a car without a working engine. Don't you think any car maker worth a darn would want to know why one of their vehicles engines just seized up on the highway? Kia's been super lucky so far no one has died due to their negligence. Additionally a co-worker of mine had a problem with his Kia and will not buy one again either. For his Kia the car required a specific oil filter made and installed by Kia and if that was not used the engine fails. He was never told this when he purchased the vehicle. His insurance successfully sued Kia for over $7,000 for his engine failure. Unfortunately my insurance doesn't cover mechanical issues. Ever wonder why your Kia never quite gets the gas mileage it was rated to get? Kia has also paid out for a class action lawsuit because they lied about the MPG of many of their models. The very MPG rating that many people base a large percentage of their purchase decision on. Yeah, Kia lied about that too but kept it hush hush. You can find the information online if you look for it. I had my car into the dealership (Auffenberg) several times before the engine failure telling them something is bad wrong with the car. The Kia service department ran every kind of computer diagnostic and could find no reason for the problems which included knocking, major loss of power, major loss of fuel economy and car dying at both idle and speed. Check engine light was always on and every sensor it said was malfunctioning was replaced and it didn't help. Unfortunately I could not leave my car with Kia. Kia wouldn't supply me with a free rental. They said it was against company policy. My step daughter was dying needing a second liver transplant as all this was going on and I couldn't be without that vehicle. With only one vehicle (other than the Kia) I wouldn't be able to get to work or my step daughter wouldn't be able to be cared for properly. I told Kia this and still they refused to get me a rental while they actually got to the root of my car problem and addressed it. Instead they said sorry to hear that, we can't find any problem with your car. They actually let me leave with a car they KNEW was dangerous and about to fail. They didn't care that my family was going through a serious medical situation with my step daughter and the car behaving as it was only increased the stress on my entire family during this time. Fortunately my step daughter got her transplant just in time and is doing ok now. Not only did Kia sell me a defective product but all this happened as our family is going through the stress of a child being deathly ill, lots of additional costs for medical related expenses and Kia was told this and didn't care. Kia added thousands of dollars to my already stressed finances by selling me a defective vehicle. But it gets even better. The Kia rep in Arizona named Steve that handles my case and many others actually told me on the phone that some of Kia's cars die early and that's just the way it is. He insisted all other car manufacturers have the same problem and also refuse to repair the vehicles leaving their customers screwed too. That's certainly not my experience nor that of anyone I know. Steve at Kia flat out told me Kia isn't going to pay and I'm out of luck because I got a bad Kia and have to eat it. That's what he said. That's Kia’s customer service that said that to me. I have to shake my head and laugh every time I call Kia and their recording says "Rated #1 in initial quality 2 years in a row!" Yeah, and dies in 78,000 miles and Kia refuses to make a full recall or honor it's warranty. You won't see Kia winning any customer service awards or vehicle longevity awards. My advice to anyone that has a Kia (ESPECIALLY if it's a 2.4L) is to trade it in and get something other than a Kia before it dies and your left paying off a car that doesn't run. I liked Kia at one time or I wouldn't have bought one. What I've found out since has opened my eyes to the quality of their vehicles and their denials of their own manufacturing defects even if it could cost lives or severely screw consumers over financially. Buying a Kia might make you think you're getting more quality for less money but it's all based upon lies and cover-ups. That is my Kia experience and it's the WORST experience I've had with any company on any level at any time in my 31 (47 – 16) years of driving cars.

  36. Avataaar/Circle Created with python_avatars Antoine Family Got Talent says:

    How are you? I've had the same problem I replace the spark plugs coil packings had some oil in it on top of the spark plugs clean them up, and I replaced the sensor for the p0320 light I had on. Installed a new battery The van still is not starting. Would you suggest to look at anything else?

  37. Avataaar/Circle Created with python_avatars Darren P says:

    Kia vehicle engines are known to only last 78,000 miles. This I'm told from a Kia represenative.

  38. Avataaar/Circle Created with python_avatars spelunkerd says:

    Working on all brands of cars has to be the challenge for the brightest techs. Those guys at the dealership have all the support they need, but you can see why technical support doesn't extend to competitors. I find new dealer repair manuals to be increasingly difficult to understand. Of course we in the general community now have the most powerful tool known, Google. In the end, visitors who look for answers benefit from the tiny number of people willing to put themselves out there and actually contribute to the common good. Those people are heroes.

  39. Avataaar/Circle Created with python_avatars Bekim says:

    What's up Eric. I know this is a old video but I'm going thru the same issue with my Kia Amanti 3.5. I'm just going to do a visual and order another sensor. Thanks Eric for the help!

  40. Avataaar/Circle Created with python_avatars Cheng Yang says:

    A junk van .hahaha.

  41. Avataaar/Circle Created with python_avatars Patty Hicks says:

    My interior lights in my 2007 Kia Sedona won't come on, any ideas?

  42. Avataaar/Circle Created with python_avatars Marc Smith says:

    Great video. I am also in NY. It is true about people waiting until a few days before the end of the month for inspection with the MIL on.

  43. Avataaar/Circle Created with python_avatars Az Care says:

    Very Informative and detailed