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  1. Corolla 9th Gen/1st Gen Matrix (2003-2008)
    Recently got this car a few weeks ago and got this code. Been reading through all threads online about what the possible solutions are and I'm hoping to find any more recent help here. The car drives well and sounds well, the only thing I notice the transmission doing sometimes is it can shift a...
  2. Highlander 1st Generation (2001-2007)
    235k+ mileage OBD throwing a p0420 AND p0430. so i replaced the exhaust manifold catalyst(B1) (OEM replacement) as well as the B2S2 oxygen sensor. 6 new spark plugs. new air filter. i clear CEL, it shows back up after about 25 miles of driving. OBD is only showing P0420 now. i’ve attached...
  3. Tacoma 3rd Generation (2016+)
    Just purchased a 2017 Tacoma V6 with 77K miles at a dealer. Within 24 hours the Check Engine Light came on. The dealer said it was a problem with the cylinder heads. The dealer is trying to get Toyota to pay for the repairs so it's still in the shop after a couple of days. Question: What...
  4. Sienna 2nd Generation (2004-2010)
    Hi all! I have a 2004 Sienna ltd w/ 200k mi. CEL was on, and was throwing a P0430 code. I did the spark plug anti-fouler modification to the bank 2 sensor 2 o2 sensor, (which is what the P0430 code refers to). And about 75 miles later, the CEL went off. Yay! BUT when I rescanned the car (I...
  5. Previa Forum
    Hello there! I’m Oak and I’m new here. I have a 92 Previa LE, automatic trans, 278xxx miles. The check engine light is on, but if I unplug the circuit opening relay and plug it back in, the light goes away until I drive approximately 15-20 miles then it comes back on. Does anyone have any idea...
  6. Scion xA Forum
    Can someone help me interpret and possibly point me in the right direction for repairs? Thanks.
  7. Tundra 2nd Generation (2007-2013)
    I have a 2007 Tundra Crewmax with 2WD. A couple of weeks ago, I the VSC & CEL came on. After some online search and testing the OBD, I got a code P2442 which calls out it's the Secondary Air Injection Valve stuck open Bank 2. After replacement of the Valve, I cleared the CEL and then the I...
  8. 89-95 Toyota Pickup/Hilux
    I used to be able to read the CEL error codes from the DLC1 port by jumping terminals TE1 and E1 in my 1990 4WD Pickup with a 22RE engine, but have not been able to do so for a while now. The CEL doesn't blink at all anymore. Now my CEL is on constantly and I need to find out what's wrong...
  9. Camry 5th and 6th Gen '02-'11, Solara '04-'08
    :frown: Guys, I have checked the coil 1 connector and the coil resistance in this Camry - LE, 2011. Everything looks fine. I cleared the CEL(check Engine Light) code twice only to see it rerun the next day. The car's CEL starts flashing when car is warm and accelerator depressed hard. It then...
  10. Corolla 9th Gen/1st Gen Matrix (2003-2008)
    Posting in here to get an idea of why my CAT might have gone bad. I've got an automatic 2006 CE with 111k miles. The car passed smog on March 5th. Just bought the car off Craigslist on March 10th, and the CEL came on after driving it about 85 miles. Seller is ducking my calls, so no luck there...
  11. Camry 5th and 6th Gen '02-'11, Solara '04-'08
    Hi all, searched a little bit through forums but could not find anything pertaining to my question. Apologies in advance if I am not making this post correctly, still trying to figure out how to use the forum :|. Has anyone here either thrown on a Dezod Red header for the Scion TC II or know of...
  12. Camry 5th and 6th Gen '02-'11, Solara '04-'08
    Something weird happened yesterday. Im driving and the CEL comes on. A few minutes later, Im turning in to park and the engine stalls. Thinking its a bad battery, i think ive had it, and get ready to go out and push. But lo and behold, the engine starts. I checked the code later using an obd II...
  13. RAV4 3rd Generation (2006-2012)
    1st Post. History: 4 months or so ago: VSC/CEL/4wd light came on. Advance Auto ODB said cylinder 3 coil bad/misfire. Replaced cylinder 3 coil and spark plug (coil was aftermarket, plug was ngk iridium). Lights resolved 2 weeks after: VSC/CEL/4wd came on again. Oreilly ODB said cylinder 5...
  14. Avalon 2nd Generation (2000-2004)
    I am the original owner of a 2000 Avalon XLS V6 3.0L . A few years ago, beginning with the infamous gas cap issue, the various indicator lamps started coming on. After getting a new gas cap, that problem went away. Then a couple years ago we started getting VSC and other lights. After over...
  15. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    Had this CEL on for quite some time and decided to take a look at it. First thing noticed is that the gas cap is a Honda branded one, although didn't see anything wrong, I went ahead to replace a brand new one (still not a genuine Toyota part, though). The CEL kept off for a good 8 days (I...
  16. Introduce Yourself Here
    Howdy, I've definitely degraded my eyesight in the past few days reading hundreds of posts on this fantastic Blog. Kudos to the creators and to those who maintain and contribute. A wonderful asset to any Toyota owner! My name's Don and I just bought an 01 Camry CE from a private party for...
  17. RAV4 2nd Generation (2001-2005)
    HHello everyone! I bought a used 2005 Toyota Rav4 in September, and today, I brought it in for a CEL diagnosis and was told I need a new engine. I would greatly appreciate any advice. Here are the details: I bought the vehicle on 9/17 from the Toyota dealer w/ 111k miles. It's now 1/10 and it...
  18. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    2000 Camry CE, 5S-FE, 93k. Automatic transmission. Over the past 6-8k miles, I have noticed that the transmission seems to like to "hang out" in lower gears than it should. I often find that I will be at cruising speed for 20 seconds or so until it shifts into 5th. No rough shifting at all...
  19. RAV4 3rd Generation (2006-2012)
    Hi there! I bought a used 2011 RAV4 about 6 months ago. It currently has 61,000 miles. About 2 weeks ago the CEL, VSC, and 4WD lights came on. I took it to my auto mechanic who thought that all it needed was a software update from Toyota. Last week the lights came on again, and my mechanic...
  20. Corolla 9th Gen/1st Gen Matrix (2003-2008)
    Hi all, I bought a used 03 Matrix (96k) a month ago. Didn't notice at the time that the check engine light (MIL malfunction indicator light) did not come on with the ignition as it should. It has now failed emissions. Codes thrown were: P0300 - P0304 (misfires) and P0420 (Cat). I've been reading...
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