P1349 VVT System Malfunction (Bank 1b) blocked oil control valve filter

Vehicle Lexus GS300 / Aristo V300 JSZ161 2JZ-GTE 1997 114,000kms fault code P1349 B1 due to blocked oil control valve filter

Part required 15678-46020 2JZGTE..JZS161; 2JZGE..JZS160..5FC 1 $5.61

Remove filter and clean with compressed air / fuel / brake cleaner or similar screen should be clear

This filter is 100% blocked


VVTi Oil control valve filter location OCV


Toyota originally introduced the VVT-i (Variable Valve Timing - intelligent) as a revolutionary design that increases engine torque and output while addressing environmental issues. By adjusting the intake valve opening timing according to the engine speed, more oxygen is supplied through the air intake valve as more fuel is injected into the combustion chamber. Power and torque is maximised due to larger scale combustion. This optimised fuel to air ratio ensures the air-fuel mixture is combusted more thoroughly.
The VVT-i portion of the system continuously varies intake valve timing throughout the rev range by hydraulically rotating the camshaft relative to its drive gear.

 

Welcome and good info, thanx

 

Thanks, this is great preventative maintenance and a good indication of how much sludge is in your motor.

Welcome

 

Excellent Info!

 

Should have been done at 100,000km service previous owner had all seals front and rear crank seals cambelt & water pump all done via Toyota dealer including engine clean out with sump off and this little NZ$ 5.61 filter was not changed

 

If all maintenance was done on time and good oil is used, that should not happen at all.

 

can you change/clean it without doing an oil change?

 

yes you can, but have a rag ready to catch about 2 oz of oil that will come out from the vvti bearing cap.

 

that thing is NASTY. looks like other owner didnt keep up good maintanance

 

I followed your directions my filter was clogged and I uncloged it. I'm waiting for the driving cycles to finish ill update when they are done. however what do I do next if the code comes back?

 

wow, an old thread back. lol. to answer your question, if the code is still there make sure you check if the timing is correct or check if the OCV is still good.

 

does anyone know where this filter is located on a gs400 (V8)? any info will definitely help as im having a p1349 code.

 

^^How exactly do I located this filter on a GS300? The diagram is kind of confusing me. LOL

 

how can i do this for my gs400?
i have that code aong with 6 other ones hopefully they are because of this

 

If it's really old I would just suggest you replace it instead of cleaning it. The filter housing is made of plastic and it might get brittle and break into pieces. Then those pieces might make it into the VVTi sysetm. They're only $5 a piece, so do what you will