Avensis Lambda Sensor

Matt_porter

Hi all looking for some assistance with my 52 plate avensis 1.8vvti.

EML on, local garage diagnosed lambda sensor, had it replaced at a cost of £150 inc vat (it was the only fault found on diagnostics)

Drove the car for 10 mins and EML has come back on. Any thoughts please

Thanks in advance

Matt

joujoujou

Go back to that garage to read codes again (if it was me and if it was 10 min. really, I'd turn back immediately).

ofcork

A lot of guys have gone through replacing all sensors in these from reading up on it you need a guy who knows what hes at, a main dealer wanted to replace tha cat in mine a car which has passed an nct since no bother.

shamwari

Some Toyota's are very fussy about the O2 sensors they use, and certainly earlier Corolla's and Carina E's needed the genuine article as pattern replacements simply weren't up to the job. I wonder does your Avensis fall into this category OP?

CJhaughey

shamwari wrote: »

Some Toyota's are very fussy about the O2 sensors they use, and certainly earlier Corolla's and Carina E's needed the genuine article as pattern replacements simply weren't up to the job. I wonder does your Avensis fall into this category OP?

Its very strange how the Genuine Lambda sensors work when NGK branded ones won't do the job. I can only assume that its in the quality control that Toyota specify. Ford can have have the same issue.

joujoujou

As long as we don't know what code lights up EML this time, we can only guess.

shamwari

CJhaughey wrote: »

Its very strange how the Genuine Lambda sensors work when NGK branded ones won't do the job. I can only assume that its in the quality control that Toyota specify. Ford can have have the same issue.

Yep same with Ford alright. I have a hunch that in addition to the sensor switching, that current monitoring by the ECU is also a factor.

There's also an even weirder known issue with certain Honda's where non-use of the genuine O2 sensor causes an EGR fault code to be flagged!

MAYOMICK

There are two Lambda sensors on the Avensis and as far as I know the code reader doesnt tell you which one is gone.One sensor is up near the manifold and the other one is underneath near the cat.I am driving around with the EML on for the last four or five years and the car passes NCT no bother

joujoujou

MAYOMICK wrote: »

[...] the code reader doesnt tell you which one is gone. [...]

Of course it does.