P0101 on a Honda: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

You can usually keep driving a Honda with P0101, but a bad MAF reading can cause rough running and worse fuel economy until it's fixed.

What P0101 means on a Honda

On a Honda, P0101 means the mass air flow sensor is reading outside the expected range for the current engine conditions. Honda's computer relies on the MAF reading to set the right fuel mixture, so a bad reading can cause rough idling, hesitation, and poor fuel economy.

Is P0101 common on Hondas?

P0101 shows up on Honda models like the Civic, Accord, and CR-V. A dirty MAF element, a cracked intake hose, or an over-oiled air filter are common triggers, and the sensor itself can fail with age.

Commonly reported on: Civic, Accord, CR-V, Pilot.

Symptoms

Check engine light on
Rough idle
Hesitation when accelerating
Worse fuel economy

Common causes

most common: Dirty MAF sensor
common: Cracked or loose intake hose
common: Over-oiled aftermarket air filter
less common: Faulty MAF sensor
less common: Damaged wiring or connector

How to fix it

Fix	DIY?	Typical cost
Clean the MAF sensor with sensor-safe cleaner	Yes	$10–20
Inspect the intake hose and clamps for leaks	Yes	$0–50
Replace the MAF sensor if cleaning doesn't help	Yes	$150–400
Replace the air filter if it is dirty	Yes	$15–40

Frequently asked questions

Can I drive my Honda with a P0101 code?

Yes, in most cases the car will still run, but it may idle rough or hesitate. Get it checked soon because a bad MAF reading can hurt fuel economy.

Why does P0101 come back after I clean the MAF on my Honda?

The sensor may be worn out, or there may be an intake hose leak or an over-oiled air filter recontaminating it. Check those before replacing the sensor.

How much does it cost to fix P0101 on a Honda?

Cleaning the MAF costs about $10–$20 in cleaner. A replacement sensor usually runs $150–$400, and a new air filter is about $15–$40.