Engine Management Fault Codes

[jnr]

Hi, I have fault code PO141 "Oxygen sensor heater circuit malfunction. Bank 1 Sensor 2". Can anyone advise if this is a serious fault that needs immediate attention?

Thanks

[ChrisIS200SportTTE]

It does need immediate attention. Need a new oxygen sensor by the sound of it.

[ChrisIS200SportTTE]

Oh and Lexus are expensive for this, £194 they quoted me.

[jnr]

Ok thanks Chris, when the OB2 diagnostic interface was plugged in the fault was re-set, the light has gone out and not returned so should I assume all is ok for now but the fault will probably return.

[steve2006]

I would monitor the situation, Chances are it will reoccur, O2 sensors can go out of specification this is not helped by the environment they have to operate in i.e. Cold to hot in a few minutes and subjected to water and road contaminents.

Lexus are quite sensitive to replacements so beware of replacing it with a "universal" type, it may be cheaper but may not do the job long term.

[ChrisIS200SportTTE]

When my light came on I also re set the fault to get the light to go out. It came back on 2 days later. Did the same again, came back on a week later. Chances are it will come back on showing the same code so you will need to get it sorted.

As Steve said, use a genuine Lexus/Toyota part. More expensive in the short term, cheaper in the long term.

[jnr]

Thanks again, anyone know where I can get hold of a new sensor the denso part no is 234-4015, I've tried searching but cant seem to find the correct one anywhere! advice would be appreciated.

[sjrainsford]

You can fit a Denso universal one too. They work perfectly fine and cost around £50. They're basically the same, but without the Lexus specific plug on. I'm running them on mine.

[jnr]

That sounds more like it not the £174 that lexus want! Do you know what the Denso part no is for the universal one?