Avensis 03 Lamber Issue Part Numbers/help Requiered Asap

[sam212]

hello just a quick one

my mum has a toyota avensis 03 plate 2.0 vvti T4 and has been told all for lamber sensors are gone i just would like to know if this is common for them all to go or will it the pre cat sensor throwing the others off? theres four sensors in the system and i cant really see them all going at once but the longer its left theses a higher change of damaging the cat witch we defo dont wont

how well do the the non genuine parts hold up on these beast i have a high performence car myself witch eats non genine parts for breakfast but how do they last in these?

any help would be great and any links to the corect parts again would be great also if anyone knows the part numbers for the sensors that would be awesome

engine number 1AZ1051462

thanks all

sam

[sam212]

anyone?

[bestseany]

The O2 sensors are a very common failure part in the Avensis.

Quite often it's the heater in the sensor that fails, but you can do a quick check with a multimeter to see. As you look at the engine from the front, there are two plugs (grey and black) on the right edge of the engine just under the black plastic engine cover. There are also two plugs (grey and black) above the alternator. Take each one off at a time and check the resistance across the two black wires. They're normally about 16ohms I think, if you have one that's very different or is an open circuit then it may just be that one that needs replacing.

[sam212]

ok cheers will have a look :)