Are faulty sensors—such as the MAF Mass Air Flow o r O2 sensor—leading to engine sputtering in Changan Karvaan in Pakistan?

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Are faulty sensors—such as the MAF Mass Air Flow o r O2 sensor—leading to engine sputtering in Changan Karvaan in Pakistan?

Bad sensor readings disrupt the fuel-air mixture. Are these issues being diagnosed with proper scanners in local workshops?

Sirat Ul Jinan asked on 26 Jun 2025 16:57:36 pm

1 Answer

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Car Mechanic Expert - on 26 Jun 2025 17:29:15 pm

Yes:

A faulty MAF sensor misreads air intake, causing:

Incorrect fuel injection

Rough idling

A bad O2 sensor affects:

Exhaust mixture monitoring

Fuel-air ratio adjustments

These require OBD-II scanners to diagnose, which are often not available in roadside workshops.

⛔ Conclusion: Sensor failures go undetected unless scanned. Many mechanics guess the issue.