Lamda Sensors

[concorde]

can anyone tell me how many lamda sensors my rav 4.2 has in total?

[Grumpy stumpy]

I believe the 4.2 has four in total bank 1 sensor 1 and bank 1 sensor 2, then bank 2 sensor 1 and bank 2 sensor 2.

[snoged]

4 ?

[snoged]

correct

[redlew]

Is that for both the diesel and petrol, please?

[Grumpy stumpy]

Not sure on diesel as mine has four but is the petrol, hopefully someone else will be able to confirm diesel numbers.

[concorde]

can a fault giving lambda sensor be successfully cleaned and if so how?

[Grumpy stumpy]

Lamba sensors tend to just give up and need to be replaced, have not known one to be cleaned and then work again .

[pmb]

From my years on here and elsewhere it is usually the heater circuit that gives in. It should be about 15 ohms between the black leads but goes o/c. Post your fault code.

[concorde]

yes thats correct i,am having fault codes po141,p1135,p1155.

on bank 1 sensor 2 which are as you stated heater circuit faults