P0102Medium urgency

Mass Air Flow Sensor Circuit Low Input

Engine · Air Intake

⚠️ Safe to drive short-term — performance affected.

What this means

The MAF sensor is sending a signal lower than expected. Usually means the sensor is dirty, there is a wiring issue, or an air leak is present before the sensor.

Likely causes

Dirty or contaminated MAF sensorMost common
Wiring harness damageCommon
Air leak before MAF sensorCommon
Failed MAF sensorCommon

Estimated repair cost

MAF sensor cleaning$10 – $30

MAF sensor replacement$100 – $350

Wiring repair$75 – $200

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Frequently asked questions

What does P0102 mean?

The MAF sensor is sending a signal lower than expected. Usually means the sensor is dirty, there is a wiring issue, or an air leak is present before the sensor.

Is P0102 serious?

Safe to drive short-term — performance affected.

How much does it cost to fix P0102?

Repair costs for P0102 range from $10 – $30 depending on the root cause and your vehicle.

Can I drive with P0102?

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