OBD Guide
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P00B3

Radiator Coolant Temperature Sensor Circuit Low

P00B3 is an OBD-II diagnostic trouble code meaning: Radiator Coolant Temperature Sensor Circuit Low. Common causes: coolant temperature sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Engine overheating
  • Check Engine Light Illuminates

Causes

  • Coolant temperature sensor malfunction
  • Open or short circuit in wiring harness
  • Poor contact in the sensor connector
  • ECU malfunction

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Check the resistance of the coolant temperature sensor
  3. Replace the coolant temperature sensor if necessary
  4. Check the operation of the computer

Related codes

P0115P0116P0117P0118

Error P00B3 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P00B3 code mean?

P00B3 is an OBD-II diagnostic trouble code that indicates: Radiator Coolant Temperature Sensor Circuit Low

What causes a P00B3 error code?

The most common causes of P00B3 include: Coolant temperature sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; ECU malfunction.

How do I fix a P00B3 diagnostic trouble code?

To fix P00B3: Check the integrity of the wiring harness and connectors. Check the resistance of the coolant temperature sensor. Replace the coolant temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P00B3?

Limited driving only, diagnose soon

How much does it cost to fix P00B3?

The estimated repair cost for P00B3 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat