OBD Guide
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P0111

Intake Air Temperature Sensor 1 Circuit Range/Performance Bank 1

P0111 is an OBD-II diagnostic trouble code meaning: Intake Air Temperature Sensor 1 Circuit Range/Performance Bank 1. Common causes: faulty intake air temperature sensor, contamination or oxidation 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

  • Increased fuel consumption
  • Unstable engine operation at idle
  • Reduced engine power
  • Difficulty starting the engine, especially when cold
  • Black smoke from the exhaust pipe
  • Check Engine Light Illuminates

Causes

  • Faulty intake air temperature sensor
  • Contamination or oxidation of sensor contacts
  • Open or short circuit in sensor wiring
  • Air leak in the intake manifold
  • Air filter clogged
  • Engine ECU malfunction
  • Damage to the sensor connector

How to Fix

  1. Check the condition of the air filter, replace if necessary
  2. Visually inspect the IAT sensor for dirt or damage.
  3. Clean the sensor with a special cleaner or alcohol
  4. Check the integrity of the wiring and the quality of connections
  5. Measure the sensor resistance with a multimeter (compare with standard values)
  6. Check the supply voltage at the sensor connector
  7. If necessary, replace the intake air temperature sensor
  8. Clear error memory and test drive

Related codes

P0112P0113P0110P0171P0174

Error P0111 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0111 code mean?

P0111 is an OBD-II diagnostic trouble code that indicates: Intake Air Temperature Sensor 1 Circuit Range/Performance Bank 1

What causes a P0111 error code?

The most common causes of P0111 include: Faulty intake air temperature sensor; Contamination or oxidation of sensor contacts; Open or short circuit in sensor wiring; Air leak in the intake manifold.

How do I fix a P0111 diagnostic trouble code?

To fix P0111: Check the condition of the air filter, replace if necessary. Visually inspect the IAT sensor for dirt or damage.. Clean the sensor with a special cleaner or alcohol. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0111?

Limited driving only, diagnose soon

How much does it cost to fix P0111?

The estimated repair cost for P0111 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat