Clubjazz - Honda Jazz & HR-V Forums

Honda Jazz Forums => Honda Jazz Mk2 2008-2015 => Topic started by: TheDonut on January 27, 2026, 05:25:36 PM

Title: P0139
Post by: TheDonut on January 27, 2026, 05:25:36 PM

Hi all , got the code P0139 come up with the check system light on.
I've checked fuel cap , all fine .
Would it be a sensor on the cat?
If so is it diyable?

Cheers

Donut 👍

Title: Re: P0139
Post by: Keekster71 on January 28, 2026, 01:35:35 PM

According to Google its the second lambda sensor for the cat.  Could be faulty, or could be a broken wire, or could be an exhaust leak.

Title: Re: P0139
Post by: TheDonut on February 06, 2026, 09:07:59 PM

Thanks for the reply and sorry for the late response, been hectic at work recently.
Think I'll book into garage as need brakes doing anyway.

Thanks again.

Donut  :-)