ubergam3r

Driving my s2000 today engine light came on, everything seemed fine, engine running fine and no new noise.

Used my odb2 connector to read the code p0135 o2 sensor heater circuit (Bank 1 Sensor 1), It also said it had the came code 'pending'. Cleared code, instantly came back.

From what I've read this is to do with the heater element of the o2 sensor when its cold? and that unless a connection has come loose its a new o2 sensor?

Also just to make sure its reffering to the pre-cat o2 sensor (on the manifold), correct? Also would it be ok to still run around in till the weekend? as it seemed to drive home as normal.

Cheers,

M

BenRNBP

The heating element can and does burn out, but yes, it's worth a check of the wiring just in case.

Yes it's the pre-cat Bank 1 (Bank 2 is post-cat) and it should be good to drive, it'll refer to the ECU base mapping rather than going into closed loop mode, so it'll still drive OK. My only concern would be running rich and damaging the cat but the risk of that is low anyway

ubergam3r

Cheers for the reply, Drove it into work gingerly this morning and cant say I notice a difference low down the revs. Will sort out getting an o2 sensor and fitting it by the weekend so hopefully limiting any running.

richmc

The base map won't run it so rich that you damage the CAT but it won't help fuel economy.

O2 sensors are a consumable item, seem to last around 5 years, your originl post said it's a new sensor?

ubergam3r

No not a new sensor, or at least to my knowledge. Its a 2007 and would have thought stock o2, so yea time to get anew sensor. For whats probably a generic sensor they aren't half expensive though!

BenRNBP

So the word on the street is:

www.rockauto.com
DENSO Part # 2344124

ubergam3r

Cheers, Has anyone got a denso uk part number? It looks to be DOX1415 from my research.