CEL P0430 - what is it?
- Thread starter i4c4lo
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Gas leakage on exhaust system
Three way catalytic convertor
Open or short in heated oxygen sensor circuit
Heated oxygen sensor
Is that the only code you are getting? Sounds like maybe a bad o2 sensor.
Three way catalytic convertor
Open or short in heated oxygen sensor circuit
Heated oxygen sensor
Is that the only code you are getting? Sounds like maybe a bad o2 sensor.
P0430 Catalyst Efficiency below threshold - Bank 2
Above is the code that I have with my check engine light - anybody know what it means? Thanks in advance and Happy Holidays!
Amando
amando, it is usually either the cat or the rear o2 sensor causing the problem. 430 should be the rh side. need to check o2 sensor activity with scan tool or similar. This code usually means that the front and rear sensors have matching signals. front should cycle and rear should not.