Vauxhall Astra G Mk4 O2 Sensor Heater Circuit Fault And Fix
This Vauxhall Astra G Mk4 had an engine managment light come on with the following fault codes:
PO14104 Bank 1 Sensor 2 sensor heater circuit open
PO036-8 Bank 1 sensor 2 sensor heater circuit range
In this video I check the supply to the heater sensor and also check a second hand sensor that I want to fit. I also show how I remover this troublesome sensor located in the exhaust pipe under the engine just behind the exhautt flexible joint.
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Hope the astra is well now. Those o2 sensors could be a pain in bum. But the astra looks like a fun car to drive. Hope all is well with you and your family. Best wishes from Norway 🇳🇴
I think Ive got the same issue on my mother AStra mk5 1.8, ive changed the one before the cat but I think its the other one thats gone
Heat and penetrating oil would have been my first choice to be honest
Very interesting and informative. May i ask what brand the scan tool you are using. I have a vauxhall Zafira B and have been looking at a few machines!!! Please help, is yours specific to Vauxhalls(GM) or general to all vehicles.. thank you and a great channel
Hi if you use a stainless steel jubilee clip on your O 2 sensor tool it should stay tight and not open up .👍🏻😎👍🏻
That was a brute of a job!
Matt from “Furious Driving” swears by a penetrating spray called Bulldog BDF when undoing rusted or stuck bolts, etc.
I had to change the same sensor on our Mini last year, I ended up attacking it with an angle grinder and mole grips as the open sided socket rounded it off. A tip I learned about afterwards is to put either a jubilee clip or mole grips around the socket to try to prevent the socket from opening.
What type of blow lamp and gas do you use please
Good job well done Martin would a bit of copper grease on reassembly help ?
Good work there Martin
Result Martin, and that’s all what matters!bud! 👍👍
ah wee trick that works 99 percent of the time when o2 socket is in place put a hose clamp over it and tighten it up it stops the o2 socket spreading out
That worked out well , and the threads stayed intact
personally i think you should always look to using second hand parts wherever practical to do so
even insurance companys use what they term as green parts for repairs
The extension-a-saurus was great! must have used every extension in the tool box to make that one up Martin.
Nice testing! The wife's yaris was bogging rich, upstream 02 was lying, I put brake clean in through pcv- couldn't get it to respond and take fuel away whilst monitoring a OBD2 scanner. New 02, fixed! expensive items didn't want to throw parts at it.
In open loop (cold) car run great but closed loop, pcm run it rich af. No codes just issues
Good video. Thanks.
I find a Crows Foot Wrench Set very useful for exhausts where the item being removed is facing upwards into the car because you can rig the breaker bar to be under the car where there's room. Recommended, even though using heat saved you this time.
Hi Martin, would be interesting to see how much this has improved the fuel economy. Thanks for another great video 👍🏼
Good video, this will definitely help someone doing the same job!!!
Great improvisation mate, O2 censors are a real pig.
Hi Martin a really interesting video , I got a bit tense when you were working on that bottom censor but I knew you get it off Also recycling parts good job mate loved it .Kevbo&Jackie
Great job mate , you worked around it with the tools you had 👍👍what scanner is that ya using ?