Mass or Volume Air Flow Circuit low Input
23 articles · 5 makes affected
What is P0102?
P0102 indicates a low input signal from the Mass Air Flow (MAF) sensor, which measures the air entering your engine. This is a medium-severity powertrain issue that can cause poor performance and fuel economy, and it's most frequently reported in Ford Mustangs based on owner data. The code triggers when the sensor's voltage signal falls below the expected range.
Common Causes
- ●Faulty or dirty Mass Air Flow sensor (most common cause)
- ●Damaged wiring or poor electrical connection to the MAF sensor
- ●Vacuum leaks allowing unmetered air into the engine
- ●Clogged or restricted air filter affecting airflow measurement
Symptoms You May Notice
- ●Check Engine Light is illuminated
- ●Reduced engine power or hesitation during acceleration
- ●Poor fuel economy
- ●Rough idling or engine stalling
- ●Difficulty starting the engine
How to Fix It
- ●Clean the MAF sensor with specialized cleaner ($10-$25, Easy)
- ●Replace the MAF sensor ($100-$400, Moderate)
- ●Repair or replace damaged wiring/connectors to the MAF sensor ($150-$300, Moderate)
- ●Replace clogged air filter ($20-$50, Easy)
- ●Diagnose and fix vacuum leaks ($100-$400, Moderate to Difficult)
Root Causesfor P0102
Based on 9 owner reports
What Didn't Help
Repairs that owners tried but didn't fix the issue
Things to Check
Suggested areas to investigate based on similar cases
DIY Diagnostic Guide
DIY Diagnostic Checklist
Based on 9 owner reports
Owner Statistics
Based on 66,375 real owner discussions • 2466 confirmed solutions
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
Frequently Appears With
These codes often appear together in owner reports. Check these if you see P0102.
Based on analysis of 4 owner reports where multiple codes appeared together.