Ford focus fault codes p0036 & p0136
Discussion
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?
Both those codes refer to an oxygen/lambda sensor problem in the exhaust system, it has an internal heating element to help it warm up quickly.
Chances are the sensor is knackered, the car may have 2 fitted so a better diagnosis would be to let someone with a more sophisticated diagnostic scanner watch the sensor/s activity.
Chances are the sensor is knackered, the car may have 2 fitted so a better diagnosis would be to let someone with a more sophisticated diagnostic scanner watch the sensor/s activity.
Edited by chimp427 on Thursday 1st October 19:34
G321 said:
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?
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.
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 thoughBut I've had a few beers and wait to be corrected.
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