I just bought a used SUV and the check engine code is P0420, so how do I figure out if I actually need a new catalytic converter?
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I just bought a used SUV and the check engine code is P0420, so how do I figure out if I actually need a new catalytic converter?
1 real search · 1 real-search pass
P0420 diagnosis catalytic converter oxygen sensor exhaust leak manufacturer service guidanceGoogle ↗
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ChatGPT1 real searches · gpt-6
P0420 diagnosis catalytic converter oxygen sensor exhaust leak manufacturer service guidance Google ↗
- 09-110-23R Service Bulletin/Repair Instructions · oemdtc.com
- YES – Perform diagnosis for the DTC(s) using the procedures outlined in the applicable Service Manual. Once diagnosed and repaired, perform the road test outlined in Step 6 to confirm the repair. If DTC P0420 continues to be detected after the road test, continue the diagnosis by proceeding to the following steps. If the DTC is not detected, the diagnosis is complete. · static.nhtsa.gov
- P0420: Catalyst System Efficiency Below Threshold (Bank 1) · guides.innova.com