P0101 Honda Civic
MAF Sensor Circuit Range/Performance · Powertrain Code · Medium · Repair: Easy
What is P0101?
The MAF sensor readings are outside the expected range for the current operating conditions.
When the Honda Civic triggers code P0101 (maf sensor circuit range/performance), 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
- Contaminated MAF sensor element (oil from aftermarket air filter)
- Air leak between MAF sensor and throttle body
- Cracked or loose intake boot/resonator
- Failed MAF sensor (common after 100k miles)
Symptoms
- Check Engine Light on
- Rough idle or stalling
- Hesitation during acceleration
- Poor fuel economy
- Hard starting
Notes for Honda Civic
If you use an oiled aftermarket air filter (K&N style), over-oiling is the most common cause — switch to a dry filter or clean the MAF element carefully.