P0420 Code: Catalytic Converter Issue (Symptoms, Causes, and Fixes)
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P0420 Code: Catalyst System Efficiency Below Threshold (Bank 1)
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Diagnose P0420 Catalytic Converter Code
P0420 — Эффективность каталитической системы ниже порогового значения (блок 1) — Opel Astra H GTC, 1,8 л., 2006 года | поломка | DRIVE2
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![Astra Mk5/H] [04-09] - 1.4 SXI Astra exhaust emissions warning light P0136 and P0420 | Vauxhall Owners Network Forum](https://www.vauxhallownersnetwork.co.uk/cdn-cgi/image/format=auto,onerror=redirect,width=1920,height=1920,fit=scale-down/https://www.vauxhallownersnetwork.co.uk/attachments/z14xep-engine-jpg.18858/ "Astra Mk5/H] [04-09] - 1.4 SXI Astra exhaust emissions warning light P0136 and P0420 | Vauxhall Owners Network Forum")
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