Ask Andy AIP0102 Mass or Volume Air Flow Circuit Low Input
What it means, what causes it, and what it costs to fix.
What P0102 means
The MAF signal voltage or frequency is below what's possible for a working sensor, which usually means a wiring or connector problem, or a dead sensor.
Can I drive with P0102?
Severity: Medium. Fix soon so it doesn't turn into something bigger.
Often drivable but may stall or run poorly. Some cars go into reduced power.
Get a diagnosis for your exact car
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Ask Andy about P0102Symptoms
- Stalling
- Hard start
- Hesitation
- Check engine light
Common causes
Most likely first.
- Unplugged or corroded MAF connector
- Broken wire in the MAF circuit
- Failed MAF sensor
- Blown fuse feeding the sensor
How to diagnose P0102
- Check the MAF connector is fully seated and free of corrosion.
- Check power, ground, and signal at the connector with a multimeter.
- Wiggle-test the harness while watching live MAF data.
Tip: most US auto parts stores will read your codes for free.
Repair costs
| Connector or wiring repair | $50–$200 |
| MAF sensor | $100–$350 installed |
Typical US prices. Your vehicle, region, and shop rates will change these.
P0102 FAQ
What does P0102 mean?
P0102 means "Mass or Volume Air Flow Circuit Low Input." The MAF signal voltage or frequency is below what's possible for a working sensor, which usually means a wiring or connector problem, or a dead sensor.
Can I drive with a P0102 code?
Often drivable but may stall or run poorly. Some cars go into reduced power.
What is the most common cause of P0102?
The most common cause is: Unplugged or corroded MAF connector. Other causes include broken wire in the maf circuit and failed maf sensor.
How much does it cost to fix P0102?
Typical repairs run about $50 to $350 in the US, depending on the cause. Connector or wiring repair: $50–$200.
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