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🟢 SOLVED: Land Rover Range Rover 2020 Catalytic converter P0420 code — Land Rover Range Rover 2020 | MyCarFault
🟢 SOLVED 80% 1 fix reported · 114 driver confirmations

🟢 Land Rover Range Rover 2020 Catalytic converter P0420 code

Land Rover Range Rover 2020 P0420
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Land Rover Range Rover 2020 P0420 catalytic converter efficiency below threshold. Car runs fine. Failed emissions test. 93203 km. This fault code is stored when the engine control unit detects a specific fault condition. Common causes include sensor failures, wiring faults, and component wear. Always read additional fault codes before replacing parts — multiple codes together provide a clearer diagnosis. Clear the code after repair and test drive to confirm the fault does not return.

🔍 Symptoms

📍 Land Rover Range Rover ⚠️ P0420 fault code

⚙️ Possible Causes

Fault code P0420 detected Land Rover Range Rover Possible: Downstream O2 sensor replaced first $85. Code returned 1000 miles later. Catalytic converter genuinely worn — replaced with quality aftermarket $320. Passed emissions test.

Onarım / Çözüm

Based on 114 driver confirmations

Downstream O2 sensor replaced first $85. Code returned 1000 miles later. Catalytic converter genuinely worn — replaced with quality aftermarket $320. Passed emissions test. 0%
0 worked · 0 did not · ⚪ Unverified

🧾 Driver Reports

✅ Fixed Downstream O2 sensor replaced first $85. Code returned 1000 miles later. Catalytic converter genuinely worn — replaced with quality aftermarket $320. Passed emissions test.
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