P0660 Fault Code

[mooneyls430]

Hi all, have a 04 430. Fault code for inlet manifold tuning valve keeps coming up..it will put on engine light but goes off after a few days.. Any ideas.. Thanks Brian

[ManicMark]

Sounds like maf sensor, you could try cleaning it. Lexus charge £60 for a diagnostic check so may be worth running it in to be sure.

[mooneyls430]

Thanks but should the maf show up with it's own fault codes instead of this tuning valve...by the way what is this tuning valve..lol

[ManicMark]

I assumed a tuning valve & a maf were one in the same.

[steve2006]

I seem to remember something about the failure of the Intake Air Control Valve Accuator on the LS430 part number 17335-50010 priced around £55.00.

[ipwn]

Steve, I think that was replaced on my car actually at 80k..

[mooneyls430]

well ordered one of those valves from the dealer and just need time to fit it now... ill post as to how easy or hard it is to change this valve....

[ManicMark]

Hi keep us posted as mine has developed the same problem, bought a code reader & it came up p0660 intake manifold tuning control open bank 1. which is bank 1 near or off side ?

[mooneyls430]

hi mark, from what i can figure there is only one in the middle of the inlet manifold.. a line of what look like throttle flaps built into the bottom half of the manifold... the valve i got was a vacumn actuator which has now been misplaced by my wife or kids.... i think its safe to say its gone (€100 down the drain... tip keep stuff out of reach of spouse and kids). to change its a monifold off job... but the fact its intermittant leads me to think its electrical... how would the engine ecu pick up a vac fault (no electronics on the valve i had).trying to figure out what controls this system and if i find out ill let you know.... at the moment i just stick in the code reader and delete the fault as it appears..... look up a site www.lexussouthatlantaparts.com...look up fuel, exhaust and emissions catagory...good diagrams off this system....

[m1pnk]

so i got the p0660 fault code showing as well..... is it the £1k job i think its going to be..... thanks for any help.... pinky

[mooneyls430]

I sourced the tuning valve from local lexus dealer. One electrical connector, vacumn pipe and screw hold it on. That's the easy bit. You need to remove inlet manifold. Drain coolant, remove throttle body then manifold. Tricky and it took me best part of the day. I renewed inlet gaskets too. Would not like to see labour bill that lexus would charge.

[m1pnk]

well there quoting £1100 over the phone..... ill use my specialist for around £700

[mooneyls430]

Glad i did it myself. 700 sounds a fair price. Just for info the stater motor is under the manifold so if it ever gives trouble expect to fork out another 700.

[m1pnk]

cheers mooney

[Roy hill]

On 1/27/2013 at 9:38 PM, steve2006 said:

I seem to remember something about the failure of the Intake Air Control Valve Accuator on the LS430 part number 17335-50010 priced around £55.00.

 

[Roy hill]

Hi.i have p0660 code on my 2003 ls430.code says fault with.inlet manifold tuning valve. Can anyone send details of where this valve is located? Many thanks,Roy.

 

 

[Roy hill]

18 minutes ago, Roy hill said:

Hi.i have p0660 code on my 2003 ls430.code says fault with.inlet manifold tuning valve. Can anyone send details of where this valve is located? Many thanks,Roy.

 

 

 

[mooneyls430]

16 hours ago, Roy hill said:

 

It is located under the inlet manifold. Manifold has to come off.

[Roy hill]

Many thanks mooneyls430.one further question if i may.is there only one of these valves on car or are there 2? Code says fault on bank 1??