OBD Guide
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C05B7

Brake Booster Temperature Sensor C Circuit Intermittent/Erratic

C05B7 is an OBD-II diagnostic trouble code meaning: Brake Booster Temperature Sensor C Circuit Intermittent/Erratic. Common causes: open or short circuit in the sensor circuit, faulty brake booster temperature sensor. Estimated repair cost: $33–111.

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

Symptoms

  • Unstable operation of the brake system
  • Malfunction indicator light (Check Engine)
  • Reduced braking efficiency in some modes

Causes

  • Open or short circuit in the sensor circuit
  • Faulty brake booster temperature sensor
  • Poor contact in sensor nod connector
  • Wiring harness damage

How to Fix

  1. Check the integrity of the sensor circuit (breaks, short circuits)
  2. Inspect the sensor connectors for corrosion or damage.
  3. Check the resistance of the brake booster temperature sensor
  4. Replace sensor if necessary
  5. Clean or replace damaged wires

Related codes

C05B8C05B9

Error C05B7 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C05B7 code mean?

C05B7 is an OBD-II diagnostic trouble code that indicates: Brake Booster Temperature Sensor C Circuit Intermittent/Erratic

What causes a C05B7 error code?

The most common causes of C05B7 include: Open or short circuit in the sensor circuit; Faulty brake booster temperature sensor; Poor contact in sensor nod connector; Wiring harness damage.

How do I fix a C05B7 diagnostic trouble code?

To fix C05B7: Check the integrity of the sensor circuit (breaks, short circuits). Inspect the sensor connectors for corrosion or damage.. Check the resistance of the brake booster temperature sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C05B7?

Limited driving only, diagnose soon

How much does it cost to fix C05B7?

The estimated repair cost for C05B7 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat