Catalyst issue?
08-09-11, 04:15 PM
#1
Catalyst issue?
Hi,
My CEL came on the other day. Hooked up my scanner and received the following message,
" Catalyst Efficiency Below Threshold (Bank 1) P0420 "
I did a search here but no results for code 0420.
Do you believe I may have an O2 sensor issue or catalytic convertor issue?
Any help would be appreciated.
Thank you very much!
My CEL came on the other day. Hooked up my scanner and received the following message,
" Catalyst Efficiency Below Threshold (Bank 1) P0420 "
I did a search here but no results for code 0420.
Do you believe I may have an O2 sensor issue or catalytic convertor issue?
Any help would be appreciated.
Thank you very much!
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mre2000
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