P0102 — Mass or Volume Air Flow "A" Circuit Low Input
Category: Powertrain Severity: Medium
Updated:
DTC code P0102 means: Mass or Volume Air Flow "A" Circuit Low Input. It falls under the "Powertrain" category, with an estimated severity of Medium. Common causes include dirty or faulty MAF sensor, intake air leak and faulty wiring/connector; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Dirty or faulty MAF sensor
- Intake air leak
- Faulty wiring/connector
- Clogged air filter
Symptoms
- Loss of power when accelerating
- Unstable idle
- Higher fuel consumption
- Jerking while driving
How to diagnose it step by step
- Check the MAF connector.
- Measure supply, ground and signal.
- Clean the sensor.
- Replace the MAF if the signal stays low.
How to fix it
Clean or replace the MAF/MAP sensor and check for intake leaks.
Estimated repair cost
MAF: $100–300.
Frequently asked questions
What does DTC code P0102 mean?
Mass or Volume Air Flow "A" Circuit Low Input.
Is code P0102 serious?
Severity Medium. Not urgent, but worth diagnosing to avoid bigger damage.
Can I keep driving with code P0102?
Yes, carefully.
Related codes
P0101 P0103 P0106 P0107 P0108 P0110 P0112 P0113 P0115 P0116
Refine by car make
🛒 Buy mass air flow sensor (MAF) at Autodoc (affiliate link)