Lexus RX 2010-15 :: AWD / VSC Alarms With Codes P0420 And P0430 On RX350
Oct 22, 2013
We bought the 2010 RX350 a couple of weeks ago and have gotten these codes twice.. I have a good scanner and know what the codes say about Cat's bank 1 and 2 operating below threshold. I know some of you are going to say replace the cat's, others are going to say replace the sensors and neither should be the problem... If it were a cat or sensor, then they would not come in at the identical same time... It has to be something common such as a throttle body, charcoal canister, or another item upstream of the cat's... Not the gas cap either...Maybe a vacuum hose..
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A few weeks back I got my ARK exhaust installed with no problems. Due to some personal reasons I had it removed and my stock exhaust reinstalled by a different shop over this past weekend. I've been driving it fine for the past few days but today I noticed the CEL on with codes P0420 and P0430. I hit up the shop to see what was up and he told me he didn't touch anything that should have caused this. What should I do....
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I took my car to get inspected today and it was rejected because of P0420 and P0430: Both Catalyst system efficiency below... My check engine is also on.
I have the full Meisterschaft exhaust installed (+midpipe) PPE headers and K&N intake. Whats the problem and how can I get this fixed so I can pass the inspection?
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I have a 2013 F350 Crew Cab Long bed xl with 128000 miles on it. I just barely bought it from a small dealer and had a check engine light come on for the cats.(P0420 and 0430)
I have spoke with the dealer and he assured me that he would replace the cats. He stated he had O2 sensors replaced and thought he had fixed the problem. Not sure if he replaced all sensors or just the fronts.
He has been avoiding calls lately and will not return my messages. Anyways, My question is what should I be looking for to prevent future cats from going bad. I just ordered a bluetooth OBD 2 scanner and bought the Torque Pro App.
I am not new to working on trucks but they have all been 1995 and older and i am new to anything scanner wise and do not know what I should be monitoring. If I can't get this guy to replace the cats I want to monitor everything to make sure the cats are bad.
BTW, Fuel Mileage is at best 12.3 with an extremely light foot, Driving normal it drops off to about 11.8-12. Is this a normal MPG in these trucks? I have seen post about people getting close to 16 unloaded not smashing throttle?
On another note, I just remembered that my traction control light will come on with no wheel spin at times after starting the truck and driving away.
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I have recently picked up a 2005 F350 with the 5.4, which has 212k on it. Has a check engine light on for P0420 and P0430, as well as some kind of a 'ignition coil 'D'', I forgot which code it was as I deleted them at first to see which would come back. After driving it, the P0420 and the P0430 came back, but not the other, yet probably. I'm guessing the misfire due to the ignition coil caused the cats to go bad and the 420/430 codes, unless these codes are coincidental and the cats went due to high mileage.
Either way, I'm pretty sure I will need to replace the cats and was wondering what is the cheapest route. Should I get individual cats and have a shop weld them on? Should I go to Advance Auto parts or Auto Zone and get the whole pipe with the cats attached to them already and then get them installed? I anything will involve welding, I would have to bring it in to a shop. Also, in regards to the ignition coil misfire, what a good way to check which one it is?
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I bought this truck (2011 F-350 6.2l) used a month ago with 125000 miles on it. Of course the MIL light came on as soon as the ink dried. The codes read PO420 & PO430 and my local Ford Service said replace the cats. I said what is the cause of the failure, ford said here is a list of possible causes but it's not reading other codes so they don't know what caused the failure.
Well, I went ahead and replaced both catalytic converters, all four O2 sensors, and I replaced all sixteen spark plugs. Guess what, the MIL light is back on not 24 hours later reading PO420, PO430, and now PO620 and PO645. So I just went back to Ford today and all they did was cleared the codes and told me to call if the light comes back on. They said my PCM is up to date but why it's now reading GENCOM code or AC Clutch code.
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My wife suddenly had error messages today, Check AWD System, check engine, traction. Carista reports P0138 O2 sensor high circuit voltage bank 1 sensor 2and also C1241 ABS low battery positive voltage. I get the O2 sensor or wires could be bad, but the C1241 could be expensive ECU. Think both could happen at same time or just a thrown code? Reset turned warnings off but Carista reports permanent for P0138.
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I was having ABS Brake Malfunction alarms. After turning the car off/on it would reset. It took the dealer time to figure it out because it would not leave any error code on the computer. They finally got it to have the issue while their computer was connected and could see the error code. They then discovered there is a technical bulletin for this issue. The ABS Actuator Assembly needs to be replaced.
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The vehicle is a 2001.5 Passat 4 Motion V6. 120,000 miles on the Passat.
The original Cats were replaced 1 month ago after a service station deemed them dead. When the vehicle failed emissions.
The codes were p0430 and P0420 and P411.
Before that about a year ago The O2 sensors were replaced.
After 2 new catalytic converters were installed. The vehicle is still throwing p0420 and p0430 codes.
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So I was getting p0420 and p0430. I installed new hi flow cats on and did coil pack 1 & 3 since I was getting misfires there. Erased the codes after all the installs and they stayed off. It's been a little over a month later since the installs and my CEL came back on, scanned it and I'm getting same 2 codes again
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My father's prius recently did a very strange thing. When he tried to start the car, some lights came on and several alarms went off, but the car would not start. Then when he tried to turn it off, it would not turn off....the car had to be towed to the dealer, alarms going strong.
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I find it a little concerning that I can actually drive off in our RX350 without the key fob in it. I know there is a warning on the dash, but that doesn't stop someone from stealing it. May be a park lock out would be a better solution.
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Looking for a new luxury SUV - had a 2001 RX-300 and put 230,000 miles on it and gave it to my daughter. The local Lexus dealer seems to have only AWD models and is not real useful in getting a FWD stripper (don't want nav, etc.) The local Acura dealer has several base MDX's in FWD and seems more useful. Drove both AWD versions and thought the Acura was much better handler and better road feel. Am leaning towards Acura but don't know about service costs and long term reliability - we will keep either car for 12 years probably. What say you? Doesn't seem to be a decent Acura MDX forum out there.
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I'd like to mount my passport 9500ix neatly in my new RX (CPO 2011)... I use a Blendmount and Mirrortap in my C6 Corvette, but I can't find a similar solution for the RX. Who has a Radar Detector mounted to the mirror in the RX
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I have HID low beams and Halogen high beams on my 2015 RX 350. I'd like to set the HID low beams just a touch higher. The manual shows where the adjustment screws are located, but does not indicate which way (clockwise or counter-clockwise) to turn the screw to raise the position of the headlight. Yes I could just start turning one way or the other to figure it out...
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While doing regular checkup on my car, I noticed that both radiator fans (left and right) are on when the engine is on even though the A/C is not running. Is this normal? Is this a minor issue that needs to be resolved? No faults on the dashboard btw.
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I noticed it in my 2014 RX last weekend. I've only had it for a month!
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2015 Rx350 AWD 7200 miles. Transmission started leaking.
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I heard noises like a small pump noise and a hissing air sound above the muffler area. The car had been sitting for hours and no key fob close to it. I was climbing under it looking at something else when I heard it. Sounds like a tiny electric motor running with an air hiss. Passenger side. Just bought the vehicle last week. It has 27k miles on it. Had to replace battery the other day. Said battery was replaced a year ago. Wonder if this is hurting the battery? Start great in the morning. Vapor fuel pump?
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I purchased a used 2012 RX 350 with 35K miles a month ago and just realized that when I come to a stop, the idle is pretty rough (or loud?). I also noticed that it's definitely rougher when the AC is on. As soon as I take my foot of the break and press the gas, the "roughness" goes away..
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We have a 2010 RX 350 and have had it for about 5 months. Recently, we noticed that when we stop we hear one beep and then when we put it into park, we get two beeps. It has just started doing this ..
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