You are offline — AutoTools still works from your device.

Code

P0100

Air intake

Mass airflow sensor circuit malfunction

The mass airflow sensor circuit is out of expected range.

Search another code

Most likely causes

Faulty MAF sensor
Wiring or connector fault
Dirty MAF element

Symptoms you may notice

Check engine light
Rough idle
Stalling
Poor economy

Checks to run

Inspect MAF connector and wiring
Clean with MAF cleaner
Compare live MAF readings

Tools you may need

MAF cleaner Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Air intake

Intake air temperature sensor circuit high input

Mass airflow sensor range / performance problem

Mass airflow sensor circuit low input

MAP sensor range / performance problem

Intake air temperature sensor circuit malfunction

Ask the AI mechanic

Hi! Ask me anything about your car — codes, noises, parts, maintenance.