Have there been any reported issues with the oxygen O₂ sensors o r catalytic converters in Alsvins?

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Have there been any reported issues with the oxygen O₂ sensors o r catalytic converters in Alsvins?

Faulty O₂ sensors o r clogged catalysts can spike emissions. Are Pakistani service centers identifying sensor failure codes, catalytic overheating, o r exhaust back‑pressure issues during diagnostics?

Qalb E Momin asked on 10 Jun 2025 17:46:33 pm

1 Answer

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Car Mechanic Expert - on 10 Jun 2025 17:50:09 pm

Yes, there are occasional reports of:

O₂ sensor errors codes like P0130, P0133.

Catalytic converter efficiency below threshold P0420 code.

Pakistani Changan service centers have diagnosed:

Sensor failures particularly the pre-cat sensor.

Catalyst overheating linked to prolonged rich running.

In some cases, clogged catalytic converters after 50,000–60,000 km of use on low-quality fuel.