OBD Guide
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P0101

Mass or Volume Air Flow Sensor A Circuit Range/Performance

P0101 is an OBD-II diagnostic trouble code meaning: Mass or Volume Air Flow Sensor A Circuit Range/Performance. Common causes: contamination of the sensor element of the air flow sensor, malfunction of the maf sensor itself. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Unstable engine operation at idle
  • Increased fuel consumption
  • Loss of engine power
  • Difficulty starting the engine
  • Jerks when accelerating
  • Black smoke from the exhaust pipe
  • Check Engine Light Turning On

Causes

  • Contamination of the sensor element of the air flow sensor
  • Malfunction of the MAF sensor itself
  • Damage to the wiring or sensor connector
  • Air leak after sensor
  • Air filter dirty
  • Malfunction of the crankcase ventilation system
  • Throttle problems

How to Fix

  1. Check the condition of the air filter, replace if necessary
  2. Visually inspect the air flow sensor for dirt and damage
  3. Clean the MAF sensor element with a special cleaner
  4. Check the integrity of the wiring and the reliability of the connector contacts
  5. Check the tightness of the air intake system for leaks
  6. If necessary, replace the MAF sensor with a new one
  7. Clear error codes and test drive
  8. Make sure the error does not reappear

Related codes

P0100P0102P0103P0171P0172P0174P0175

Error P0101 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0101 code mean?

P0101 is an OBD-II diagnostic trouble code that indicates: Mass or Volume Air Flow Sensor A Circuit Range/Performance

What causes a P0101 error code?

The most common causes of P0101 include: Contamination of the sensor element of the air flow sensor; Malfunction of the MAF sensor itself; Damage to the wiring or sensor connector; Air leak after sensor.

How do I fix a P0101 diagnostic trouble code?

To fix P0101: Check the condition of the air filter, replace if necessary. Visually inspect the air flow sensor for dirt and damage. Clean the MAF sensor element with a special cleaner. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0101?

Limited driving only, diagnose soon

How much does it cost to fix P0101?

The estimated repair cost for P0101 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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