OBD Guide
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P0188

Fuel Temperature Sensor B Circuit High

P0188 is an OBD-II diagnostic trouble code meaning: Fuel Temperature Sensor B Circuit High. Common causes: fuel temperature sensor b malfunction, short circuit in the sensor circuit. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Check Engine Light Is On
  • Increased fuel consumption
  • Reduced engine power
  • Rough idling

Causes

  • Fuel temperature sensor B malfunction
  • Short circuit in the sensor circuit
  • Broken or damaged wiring harness
  • Poor contact in the sensor connector
  • ECU malfunction (rare)

How to Fix

  1. Check resistance of fuel temperature sensor B
  2. Inspect the wiring harness for damage
  3. Check the contacts in the sensor circuit connectors
  4. Check the voltage in the sensor circuit
  5. If necessary, replace the sensor or repair the wiring harness
  6. Reset the error code and take a test drive

Related codes

P0187P0189P0190

Error P0188 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0188 code mean?

P0188 is an OBD-II diagnostic trouble code that indicates: Fuel Temperature Sensor B Circuit High

What causes a P0188 error code?

The most common causes of P0188 include: Fuel temperature sensor B malfunction; Short circuit in the sensor circuit; Broken or damaged wiring harness; Poor contact in the sensor connector.

How do I fix a P0188 diagnostic trouble code?

To fix P0188: Check resistance of fuel temperature sensor B. Inspect the wiring harness for damage. Check the contacts in the sensor circuit connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0188?

Limited driving only, diagnose soon

How much does it cost to fix P0188?

The estimated repair cost for P0188 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat