OBD Guide
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P0102

Mass or Volume Air Flow Sensor A Circuit Low

P0102 is an OBD-II diagnostic trouble code meaning: Mass or Volume Air Flow Sensor A Circuit Low. Common causes: dirty or faulty maf sensor, damaged maf sensor wiring. Estimated repair cost: $6–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–89 (est.)

Symptoms

  • Rough engine idling
  • Loss of engine power
  • Increased fuel consumption
  • Difficulty starting the engine
  • Jerks during acceleration
  • Black smoke from the exhaust pipe
  • Check Engine Light Illuminates

Causes

  • Dirty or faulty MAF sensor
  • Damaged MAF sensor wiring
  • Poor sensor connector connection
  • Air leak after MAF sensor
  • Clogged air filter
  • Engine control unit malfunction
  • Damage to the air filter housing

How to Fix

  1. Read and record all error codes using a diagnostic scanner
  2. Visually inspect the MAF sensor and its connector for damage.
  3. Check the integrity of the wiring from the sensor to the ECU
  4. Clean the MAF sensor with a special cleaner
  5. Check and, if necessary, replace the air filter
  6. Check the tightness of the air ducts after the MAF sensor
  7. Measure the supply voltage and sensor signal with a multimeter
  8. If necessary, replace the MAF sensor
  9. Clear error codes and test drive
  10. Recheck for errors

Related codes

P0100P0101P0103P0104P0171P0174

Error P0102 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0102 code mean?

P0102 is an OBD-II diagnostic trouble code that indicates: Mass or Volume Air Flow Sensor A Circuit Low

What causes a P0102 error code?

The most common causes of P0102 include: Dirty or faulty MAF sensor; Damaged MAF sensor wiring; Poor sensor connector connection; Air leak after MAF sensor.

How do I fix a P0102 diagnostic trouble code?

To fix P0102: Read and record all error codes using a diagnostic scanner. Visually inspect the MAF sensor and its connector for damage.. Check the integrity of the wiring from the sensor to the ECU. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0102?

Limited driving only, diagnose soon

How much does it cost to fix P0102?

The estimated repair cost for P0102 is $6–89. Actual cost depends on your vehicle, location, and labor rates.

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