What are the common symptoms of a failing o r clogged catalytic converter in the Changan Alsvin?

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What are the common symptoms of a failing o r clogged catalytic converter in the Changan Alsvin?

Do owners experience sluggish acceleration, reduced fuel economy, o r check engine lights?

Lubaba asked on 11 Jun 2025 18:14:52 pm

1 Answer

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Car Mechanic Expert - on 11 Jun 2025 18:19:00 pm

Owners often report:

Sluggish acceleration, especially at higher RPMs.

Reduced fuel economy.

Check Engine Light CEL, often with error code P0420 Catalyst System Efficiency Below Threshold.

Overheating of the exhaust system.

Jerking o r stalling under load.
These symptoms get worse over time if the blockage isn’t diagnosed early.