Chevrolet Captiva V6 P0430

[ascotauto]

Code P0430 Catalyst Efficiency below threshold (bank 2)



Hi Guys that is the fault i get with a Tech 2 . I fitted an electronic o2 downstream senor sbstitute to try and trick ecu but the engine light still comes on about 5 hrs after clearing fault. According to customer cat was removed as it was blocked up and dealers cannot get or supply a new one to the car under warranty as there is no stock.



Is there anyone that expirienced a similar problem or can you please give input as to how i can rectify situation by keeping engine light off please. Any info or help will be appreciated many hanks in advance

[genius76]

Any symptoms on engine bad accelerating and etc?

P0430 - catalyst efficiency below normal

exhaust leak, break or short circuit in the oxygen sensor, oxygen sensor, catalyst, vacuum leak, fuel filter

[ascotauto]

the funny thing is there are no symptoms the light just comes on as far as i can see there isnt any exhaust leaks sensors are new or fairly new. Customers complaint is just that the light is on and when scanned thats the fault.here is south africa we use unleaded fuel not sure of the correct name in your region but thats all i can say. Once fault is cleared light goes out. When it runs for a while performance everything is fine.

[Ashraf6119]

After cleaning the Cat did you take the vehicle for a long and fast drive on a motor way.........

Also see if you can get any good fuel treatment before taking it for a drive.......Preferable Forte..........look in here

Forte Lubricants - Engine Treatments

I am sure you will get this staff there in SA as it is originally from there South Africa........

[genius76]

there are no symptoms

that is good by this code because of here any symptoms
means something's wrong
now we have something simple
get big big big big spanner check if it is helps

[Meat-Head]

if theres no puddy cat the rear lambarda sensor will be giving out the same readings hence P0430

1) Type in google "INFERIOR website ford mustang MIL elminator schematic"

capacitor and resistor to wire in to fool ecu

OR

2) Type in google "I have an Emerican car need spark plug extenders because it is an IROC"

Then simply 'extend' the lambarda sensor out a bit charge costomer lots of money.

weird how no stock

[ascotauto]

Mr Meat just a question regarding your suggestion and ive visited the site are they only for the fords mentioned or can it be called MH's General MIL Eliminators?
Im leaning very much toward attempting your suggested method or is there anyone else who has had similar expiriences or can shed some light i will very much appreciate it

[Meat-Head]

Mr Meat just a question regarding your suggestion and ive visited the site

the only reason why i said that it just seem mustang drivers like to remove their cat - nobody else does,

here is a leeched photo it is basically just a resistor making the rear lamdda give a slightly less reading

going to cost you sod all to make, try it, or extend the lamda back a bit

http://3.7mustang.com/vb/attachments...liminators.gif

[rideon]

According to customer cat was removed

Don't see the point in doing this the hard way.....
Remove the dash and cover obd light with some tape.........that way,if customer fits new cat,is an easy peel-of job............

[ascotauto]

I agree with you 100% but this car under warranty from the dealers and the customer insisting it work correctly. Im doing the job for the dealers

[quinnd]

From experience with later model vehicles fitting electronic trickery for rear o2s never works, the ecu looks for certain signatures from rear o2s under certain operating conditions and if they fail a number of times to produce the desired result MIL light comes on with catalyst efficiency fail. The cats could have failed due to misfire or bad AFR sensors before the cats. We see lots of V6 Holdens with ageing AFR sensors and cannot maintain stoichiometric mixtures, cat gets damaged so customer has them removed. Then job must be done properly all over again, new cats, new AFR sensors, most of the time new rear o2s

[rideon]

I agree with you 100% but this car under warranty from the dealers and the customer insisting it work correctly. Im doing the job for the dealers

Well,.. car under warranty,think the dealer should give the customer a replacement car until they can do their laundry....that's the easiest way.....
or do some Public Relations ,explain in such way that ANY customer will understand that he should get used with that yellow light in the dash...(until they do their laundry)...
just quoting a VIP member here...We got your money(for the car) now F@#K OFF

[genius76]

Code P0430 Catalyst Efficiency below threshold (bank 2)
According to customer cat was removed as it was blocked up and dealers cannot get or supply a new one to the car under warranty as there is no stock.

So you working for dealer, or under dealer?

Think for a moment -

Why so quickly clogged catalytic converter? Behind the steering wheel sitting terrified women, or rotten pensioner?
Perhaps the accelerator is pressed has never been up to the end?

Think more

I know that sound a bit silly but TEST timing wery acuratli and of compression in cilinders (can be very soot burned valves) as we know it has impact on CO2 emissions.

This is my experience
I really do not remember what the code was ~4ygone, but certainly similar, the audi a6 1.8t.
Human 5 garages will change everything is possible.
Anyway after a couple of weeks kindle the error katyls bank second
Checked the spark plugs, no burned but full of shit. Check the compression. One mostly ~ 8.5, other, about seven.