OBD Guide
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P0104

Mass or Volume Air Flow Sensor A Circuit Intermittent

P0104 is an OBD-II diagnostic trouble code meaning: Mass or Volume Air Flow Sensor A Circuit Intermittent. Common causes: mass air flow sensor dirty, oxidation or corrosion of sensor contacts. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable idle speed
  • Periodic jerks during acceleration
  • Increased fuel consumption
  • Difficulty starting the engine
  • Intermittent power drop
  • Black smoke from the exhaust pipe

Causes

  • Mass air flow sensor dirty
  • Oxidation or corrosion of sensor contacts
  • Damage to the wiring to the mass air flow sensor
  • Poor sensor connector connection
  • Vibrations causing periodic contact breaks
  • Oil or dirt on the sensor element
  • Worn mass air flow sensor

How to Fix

  1. Check the MAF sensor connector for a secure connection.
  2. Clean the connector contacts from oxides and corrosion
  3. Remove and clean the sensor with a special cleaner for mass air flow sensor
  4. Check the integrity of the wiring to the sensor with a multimeter
  5. Secure wiring from vibrations and mechanical damage
  6. If necessary, replace damaged wires
  7. If cleaning does not help, replace the MAF sensor
  8. Clear error codes and test drive

Related codes

P0100P0101P0102P0103P0171P0174

Error P0104 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0104 code mean?

P0104 is an OBD-II diagnostic trouble code that indicates: Mass or Volume Air Flow Sensor A Circuit Intermittent

What causes a P0104 error code?

The most common causes of P0104 include: Mass air flow sensor dirty; Oxidation or corrosion of sensor contacts; Damage to the wiring to the mass air flow sensor; Poor sensor connector connection.

How do I fix a P0104 diagnostic trouble code?

To fix P0104: Check the MAF sensor connector for a secure connection.. Clean the connector contacts from oxides and corrosion. Remove and clean the sensor with a special cleaner for mass air flow sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0104?

Limited driving only, diagnose soon

How much does it cost to fix P0104?

The estimated repair cost for P0104 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat