OBD Guide
ENFRDEESPT

P0240

Turbocharger/Supercharger Boost Sensor B Circuit Range/Performance

P0240 is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger Boost Sensor B Circuit Range/Performance. Common causes: turbocharger/supercharger boost sensor malfunction, open or shorted sensor wiring harness. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Reduced engine power
  • Unstable idling
  • Enabling limp mode
  • Check Engine light comes on
  • Increased fuel consumption

Causes

  • Turbocharger/supercharger boost sensor malfunction
  • Open or shorted sensor wiring harness
  • Poor contact in the sensor connector
  • Leaks in the charging system (turbine or intercooler)
  • Turbocharger/supercharger mechanical problems
  • Engine ECU malfunction

How to Fix

  1. Check the integrity of the wiring harness and sensor connectors
  2. Check the serviceability of the boost sensor (resistance, voltage)
  3. Inspect the boost system for leaks
  4. If necessary, replace the boost sensor
  5. Clear error codes and check for reoccurrence of P0240
  6. Check the mechanical condition of the turbocharger/supercharger

Related codes

P0234P0235P0236P0237P0238

Error P0240 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0240 code mean?

P0240 is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger Boost Sensor B Circuit Range/Performance

What causes a P0240 error code?

The most common causes of P0240 include: Turbocharger/supercharger boost sensor malfunction; Open or shorted sensor wiring harness; Poor contact in the sensor connector; Leaks in the charging system (turbine or intercooler).

How do I fix a P0240 diagnostic trouble code?

To fix P0240: Check the integrity of the wiring harness and sensor connectors. Check the serviceability of the boost sensor (resistance, voltage). Inspect the boost system for leaks. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0240?

Limited driving only, diagnose soon

How much does it cost to fix P0240?

The estimated repair cost for P0240 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat