P0420 Code - Catalytic Converter or O2 Sensor?
#12
Thank you.
At 2500 rpm
Last edited by Ohenry; 10-14-2020 at 05:08 PM. Reason: Add photo
#15
I just purchased a 2010 (172K miles) and was told the service engine light was on and the car would not accelerate but then it went away and the SEL went out. Pulled the codes last night. P0420 and P0304; #4 misfire. Cleared the codes and they came right back on subsequent scans. Any recommendations? I experienced the same O2 voltage as OP.
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FlyLow
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02-07-2008 01:03 PM