rolandjohnson58

Peugeot 307 oxygen sensor heater failure

I'm having trouble with my 2009 Peugeot 307 (gasoline engine). The check engine light came on, and diagnostics say it's an oxygen sensor heater failure. I've also noticed I'm using more fuel. The error memory is clear about the issue. The car has 59694 km, so I'm thinking it might be a bad cable or plug. Anyone seen this before? It's driving me nuts!

4 comment(s)

I had a similar problem with my 307. Is the error for the pre-cat or post-cat sensor?

It's the pre-cat sensor. Any ideas?

Ah, yes. I had the same pre-cat sensor issue. I recommend taking it to a workshop. The sensor was faulty and had to be replaced in my case.

Thanks for confirming. I took it to a workshop like you said. It was a faulty sensor and a bad wire, just like you thought. It cost 95€ to fix. I appreciate the help!

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