StopOrDrive

Enter a 5-character code such as P0420, P0301, or P0457.

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Codes starting with P are engine and transmission, B are body, C are chassis, and U are network communication. A 0 as the second character means a generic code shared by all makes; a 1 means a manufacturer-specific code, so its meaning depends on your brand.

A steady check engine light usually means get it checked soon. A flashing check engine light means an active misfire: reduce speed and stop driving as soon as it is safe.

That doesn't look like an OBD-II code

A valid code is one letter (P, B, C, or U) followed by four characters, for example P0420.

P0102 Mass airflow (MAF) sensor circuit low input

Can I drive with P0102?

Drive with caution

Stop if the engine stalls, hesitates or won't restart.

The engine may hesitate, idle rough, or stall.

What does P0102 mean?

The airflow sensor signal is lower than possible, which usually means an electrical problem or a dead sensor.

What causes P0102?

  1. Unplugged or corroded MAF connector
  2. Damaged wiring
  3. Failed MAF sensor
  4. Very dirty sensor

How much does it cost to fix P0102?

$50 – $450

Connector or wiring repair: $50–$200. New sensor: $150–$450.

Confirm the code yourself

A low-cost scanner lets you read the code, clear it, and see if it comes back before paying for a diagnosis.

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