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p0420
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2005 SWAP UPSTREAM O2 SENSOR- Rid Code P0420 Catalyst System Efficiency Below Threshold (Bank 1)
Recently I received a DTC code P0420 prompting me from my CEL. The live feed data from my OB2 code reader revealed a consistent “0” on upstream...
Thread by: Prius_Angie, May 3, 2018, 1 replies, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting -
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2013 Code P0420 - tests?
Good afternoon all, My 2013 Prius had it's engine light come on, with code P0420. Took it to a dealer to confirm. My question is - can anybody...
Thread by: Hayden Price, Nov 22, 2017, 2 replies, in forum: Gen 3 Prius Care, Maintenance & Troubleshooting -
I just replaces Air/Fuel Sensor and O2 sensor + plugs and air filter. Still getting P0420. Whats next to check replace?
Thread by: simple2code, Aug 4, 2017, 1 replies, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting -
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P0420
2006 Prius 154000 miles California Car runs perfect, 50mpg average This is my last week to get the smog done and I can't solve this P0420 mystery...
Thread by: ALX, Nov 1, 2016, 15 replies, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting -
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P0420 Check Engine Light
I just typed out a long post then it got deleted when I tried to add a picture. Ugh! I dont have any performance issues the lack of...
Thread by: kswahl1, Feb 18, 2016, 3 replies, in forum: Gen 3 Prius Care, Maintenance & Troubleshooting
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