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Showing results for tags 'Lambda'.
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So I have experienced my first and so far only issue with the F. I had a pre-cat lamda sensor fail... to be specific P0031 H02S Heater Control Circuit Low Bank 1 Sensor 1 So dashboard does its Christmas tree impressions on the M6, I pull into the services to check it out, I must be one of few who carry a code reader in the car with me at all times just for interest. Find it to be the lambda so no great drama carry on my merry way. First call of course to Lexus to give them the specifics and to get a quote. £580 inc. VAT fitted. So after I picked myself up off the floor started searching and this is what I found. Denso/Toyota to a specific replacement, part no. DOX-0504 and can be found here: http://www.denso-am.co.uk/e-catalogue/ and can be bought here: http://www.sparkplugs.co.uk/denso-direct-fit-lambda-sensor-dox-0504 for £94 although I have a motorfactors around the corner from me and I paid the same through them. Looked at fitting myself but without a ramp I wouldnt recommend it. Being the pre-cat its pretty well hidden, you can get at the sensor to remove easy enough but the connection to the loom is very well hidden. I took it to a local independant and watched the process. For information at this stage Bank 1 is the bank of cylinders containing cylinder no.1 and is the passenger side of the car (I didnt know this). So they had to remove the small heat shield that sits behind the manifold to be able to get a hand up to unclip the sensor from the loom, The extension they had to use to take off this shield must have been near on 2ft. After its removal everything was easy, took them 45 mins all told. That 45 mins plus the fault clear and re-check was £60. All in a grand total of £154. Where Lexus get their figures for service items I have no idea. Anyway, this may well be useful to others in the future. Happy motoring LOC members....
Hi Guys, Wonder if you could help, I have got the EML now being displayed on the dash. Have code read the fault and it has come back with P0420 'Catalyst System Efficiency Below Threshold Bank 1'. I know that this code can be triggered by many things such as an air leak in the exhaust, lambda sensors (but usually P01?? code is usually triggered) I have read the freeze frame data but im wondering if there is anyone that could understand the data more than what I can. From what I've read up on, the SHORTFT and LONGFT should be as close to 0 as possible. However from the freeze frame data you can see that the SHORTFT has a positive reading and the LONGFT has a negative reading where its trying to compansate and correct the fuel mixture. What I am wondering is, from this freeze frame data, could someone diagnose where for me to start replacing parts. I'm hoping that this is just a lamda sensor issue, I have already replaced the pre cat lamda sensor on Bank 1 (Denso part no DOX-0236). Without this help, my next step would have been to replace the lamda sensor by the main cat (not sure of the Denso part number for post cat sensor), so that bank 1 has had a replacement sensor before and after the cat, to see if this clears the code. I know that I might need to replace the cat, but at this moment in time I am trying the cheapest option first to resolve the issue. But all of your opinions are welcome. Here's the freeze frame data: Other data from code reader: I hope someone on this site can point me in the right direction. Many thanks, Dean