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P0420 Catalyst system efficiency below threshold bank 1 error
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P0420 Catalyst system efficiency below threshold bank 1 error
I have Toyota Passo. I am have an issue in P042o catalyst system efficiency below threshold 1 error but the issue is temporarily fixed when I disconnect the wires of battery but after 10 minutes o r more the issue comes again. The Eco mode cannot be activated in my car when this error comes. Kindly suggest me a way to resolve this issue. What should I do?
1 Answer
27 views |
Sajid Khan asked on 23 Dec 2022 16:15:18 pm
1 Answer 
Sumaiya Akbar - on 24 Dec 2022 13:16:11 pmThere can be multiple reasons for this error.
Start the diagnosis with leaks in exhaust pipe then check the catalytic converter and o2 sensors.
Start the diagnosis with leaks in exhaust pipe then check the catalytic converter and o2 sensors.
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P0420 Catalyst system efficiency below threshold bank 1 error
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