P0102 Honda Civic
MAF Sensor Circuit Low Input · Powertrain Code · Medium · Repair: Easy
What is P0102?
The MAF sensor is reading below its expected range. Could indicate a dirty sensor, air leak, or wiring issue.
When the Honda Civic triggers code P0102 (maf sensor circuit low input), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Honda Civic.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Honda Civic.
Common Causes on Honda Civic
- Dirty or failed MAF sensor giving low voltage reading
- Disconnected or damaged MAF sensor wiring harness
- Major vacuum leak downstream of MAF sensor
- Blocked air filter restricting airflow
Symptoms
- Check Engine Light on
- Engine stalls or runs very rough
- Black smoke from exhaust (over-fueling)
- Extremely poor fuel economy
- Difficulty starting
Notes for Honda Civic
Always check the MAF connector for corrosion or backed-out pins before replacing the sensor — Honda connectors can work loose over time.