Hi I have a LS430 Europe 2001, I have error code P1349 & P1354, I can reset it but few kilometers after engine light re appear... I replaced OCV when I test VVT-i with tech stream it seems OK ... I don't know what can I do for fix it ?

 

Have you done any recent work to the car? Those codes can be caused by timing being off by one tooth, or usually dirty vvt actuator solenoids (or defective ones). Luckily there are easy things to check. Verify you have clean and full engine oil and the right viscosity, because the vvt sprocket and vvt solenoids are controlled by oil pressure and it needs to be right. Dirty oil will plug the screens and passages for these systems with sludge. Then use an ohm meter on the camshaft actuator solenoids and make sure they are not open or some ridiculous resistance. Somewhere around 14-18 ohms I think is normal. If they are good, pull the top cover and check your timing. Simply place the crank at tdc and look to see if the cam sprockets line up too.

 

History : I bought my LS430 on april 2016On July due to poor history I decided to replaced timing belt …by TOYOTAOne Year after august 2017 engine light apear & CHECK VSC & VSC OFFWith OBD/USB Tools & tech stream (made in china) I investiguated …I found P1354 P1346 P1351 P349, After searchs 1 possible common point :Timing Belt shifted !After discussion they controled it for free… because they controled & discovered 1 thoot shifted both side bank 1 & bank2So they fixed it & said you have again P1349 & P1354 but your car is too old we don't have any information & impossible do discuss with this CPUSo i continued to investigate by myself (I'm not a specialist)I replaced OCV & tested it by Tech-Stream OK I cleaned conectors of many sensors & measure Ohmeter (cold 18°C)VVT LH = 1108 OhmVVT RH = 1102 OhmCame Shaft = 1117 OhmCranck Shaft = 2095 OhmOCV RH = 7,3 OhmOCV LH = 7,3 OhmWhat do you think ?I also hear dirty Oil --> maby next step will be to change oil & filterLast was on december 2017 at 187 658 Kms with CASTROL 5W30Today it have 197 000Kms the level is OKI also hear : clean OCV filter but on LS430 access it's not easy isn't it ?

 

Today I don't solve the pb ... I changed oil & oil filter ...someone have an idea?

 

hey have you fixed ur issue, hope you have maybe now, but i’m having a similar issue with codes p1349 and p1354 i did have some issues with the crank shaft wiring and the belt being off, but now it starts up, rough idle, when slightly giving a light step on the gas it sounds like it’s not getting enough air, but if slowly bringing up the rpm it’ll only get up to around 3.5k before sounding like it’s not getting enough air

 

These symptoms don't ring a bell. Since I sold my LS, I continued driving it with the problem and sold it as is.
But My latest research indicated to replace an ev inside the upper engine section. My understanding is if you push on your accelerator pedale (strongly) it open an "extended air circuit" to enrich air/fuel mix... It increase performances. This EV is difficult to access, it is inside the top of engine requires dismantling the upper engine section... For case I start to have concerns whith air suspensions...so, with regret, I sold it.