P0101Medium urgency

Mass Air Flow Sensor Circuit Range/Performance

Engine · Air Intake

⚠️ Safe to drive short-term — fuel economy will suffer.

What this means

The MAF sensor is reading outside expected parameters. A dirty or failing MAF causes poor fuel economy, rough idle, and hesitation. Try cleaning it first before replacing.

Likely causes

Dirty MAF sensor elementMost common
Air filter cloggedMost common
Intake air leak after MAFCommon
Failed MAF sensorCommon

Estimated repair cost

MAF sensor cleaning$10 – $30

Air filter replacement$15 – $50

MAF sensor replacement$100 – $350

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Frequently asked questions

What does P0101 mean?

The MAF sensor is reading outside expected parameters. A dirty or failing MAF causes poor fuel economy, rough idle, and hesitation. Try cleaning it first before replacing.

Is P0101 serious?

Safe to drive short-term — fuel economy will suffer.

How much does it cost to fix P0101?

Repair costs for P0101 range from $10 – $30 depending on the root cause and your vehicle.

Can I drive with P0101?

You can drive short distances but should have it repaired within 1-2 weeks to prevent further damage.