Ford focus fault codes p0036 & p0136

[G321]

Hi, just had the engine light come on and the diagnostic has come up with these 2 codes. I think they both apply to each other as a quick Google search said it was a temperature sensor I think in the exhaust. I had hoped it was just an error and tried to reset the codes both on the diagnostic and by disconnecting the battery for a while but neither have worked. Anybody have an experience of this or any ideas on a cure?

[G321]

Thanks for the replies guys. I take it would be an mot failure though? Which I'm sure is next month

[G321]

Going to try and sort this myself. Had a look underneath and can't see the sensor anywhere. Any ideas before I go and spend £20 on a Haynes manual?

[G321]

bearman68 said:

It will be downstream of the cat. IIRC the cat is vertically placed coming off the exhaust manifold at the front of the engine. I would anticipate the post cat O2 sensor to be a few inches behind the engine sump, obviously bolted into the exhaust.

But I've had a few beers and wait to be corrected.

I think you're right. I bought an online Haynes manual and that pretty much confirmed it. Look like it might be awkward to get to though