AdBlock Warning

Parts of this website do not function properly with AdBlock enabled on your device. To get the best user experience on our website, please disable Adblock for this website (domain) on your browser.


10 posts in this topic

 Hi all. I just bought a 2006 Dual Cab 4.0 petrol 4x4 Hilux. It's bringing up an error code for the 1st O2 sensors. The previous owner replaced them with after market ones, but it hasn't fixed it. I've taken it to two mechanics and an exhaust place, in case it was a manifold leak, but nobody has any idea how to fix it. 

Any ideas?

Share this post


Link to post
Share on other sites
 

What is the OBD error code/s?

Share this post


Link to post
Share on other sites

The code is P2238

Share this post


Link to post
Share on other sites

Based upon what you have reported and the following URL, I would be inclined to have an auto electrician check the wiring, connections and any associated relays etc.

https://www.yourmechanic.com/article/p2238-obd-ii-trouble-code-o2-sensor-positive-current-control-circuit-low-bank-1-sensor-1-by-jay-safford

 

Share this post


Link to post
Share on other sites

Read that URL more thoroughly right to the end. Good idea to check your fuses. At least it is something you should be able to easily check before going to an auto electrician.

1 person likes this

Share this post


Link to post
Share on other sites

Thanks heaps Campbeam. Very very interesting.  I was thinking maybe my next step was going to be take it to an auto electrician so now I definitely will and show him that article.  Thanks for taking the time to reply.

Share this post


Link to post
Share on other sites

Easy to say to other people to spend money but it has to be worthwhile/relevant and solve the problem.

Interested to know the outcome.

Share this post


Link to post
Share on other sites

Have you physically removed them and checked them out, The threads are not smothered in grease ?

A hard to remove oxygen sensor may come out easier with rust penetrating oil, WD 40 and the like.

Tests show that many penetrants not only loosen oxygen sensors, but also poison them.

Oxygen sensors are sensitive to "poisoning" if liquid of any type (that leaves a residue) penetrates the inner platinized surface

of the zirconia cell (the heart of the zirconia type assembly).

Share this post


Link to post
Share on other sites

Mainly for the benefit of other members, I previously read an internet post by a USA mechanic who highly recommended using brake fluid for hard to remove oxygen sensors.

Worked a treat for me. Also discovered that my 24mm ring spanner could fit over the connector and that it was worthwhile buying a set of 3 O2 sensor removal sockets.

Located this URL https://mechanics.stackexchange.com/questions/12380/how-to-unscrew-loosen-stuck-o2-sensor

Share this post


Link to post
Share on other sites

Always apply an anti-seize compound prior to installation.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.