Hi all
I have looked through the forums and have been able to get some good info on this CEL code so far, but wads after more clarification please.
My IOBD device shows the code as P0420 Catalyst System Efficiency Below Threshold Bank 1
I was travelling at 90Kmh on a freeway when it threw the code. Pulled over checked the IOBD and reset it.
So far it has not come back on yet. that was today though.
I recently had my coil packs go out on me and it I am concerned the cat got damaged. The packs were replaced along with the plugs.
I am chasing advise on whether this could be cat or oxygen sensor or both? I am aware that coils can cause cat failure if too much fuel gets down into the cat.
If so , is there a good cat that I can use that is not OEM as the Mazda ones are very expensive. How do you distinguish between cat and oxygen sensor problem?
Cheers
Ice
I have looked through the forums and have been able to get some good info on this CEL code so far, but wads after more clarification please.
My IOBD device shows the code as P0420 Catalyst System Efficiency Below Threshold Bank 1
I was travelling at 90Kmh on a freeway when it threw the code. Pulled over checked the IOBD and reset it.
So far it has not come back on yet. that was today though.
I recently had my coil packs go out on me and it I am concerned the cat got damaged. The packs were replaced along with the plugs.
I am chasing advise on whether this could be cat or oxygen sensor or both? I am aware that coils can cause cat failure if too much fuel gets down into the cat.
If so , is there a good cat that I can use that is not OEM as the Mazda ones are very expensive. How do you distinguish between cat and oxygen sensor problem?
Cheers
Ice
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