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Old 02-20-2019, 01:54 PM
merrillwebb merrillwebb is offline
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engine light

On my 02 corolla code says o2 sensor: however I have replaced both o2 sensors, catalytic converter, cleaned throttle body and new sensor as well as throttle sensor. After clearing engine light I drive a few miles and the light comes back on. Would like to disconnect the light or fix the problem, any suggestions? Thx Merrill
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Old 02-20-2019, 09:39 PM
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Stealthee Stealthee is offline
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Re: engine light

We need to know more than just o2 sensor. What is the actual code? Your cat could be at fault.
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Old 02-22-2019, 12:38 PM
merrillwebb merrillwebb is offline
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Re: engine light

we have our own obdII tester and the code reads PO420catalytic system, bank 1. Thanks
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Old 02-22-2019, 05:58 PM
777stickman 777stickman is offline
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Re: engine light

https://www.autoserviceprofessional....yota-p0420-dtc
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