P0240: Turbocharger Boost Sensor B Circuit Range/Performance
MediumPowertrainTurbo/Supercharger
What does P0240 mean?
P0240 is a diagnostic trouble code indicating "Turbocharger Boost Sensor B Circuit Range/Performance". The sensor or component is providing readings, but they fall outside the expected operating range. The part may be degraded, contaminated, or experiencing intermittent issues affecting turbo/supercharger performance.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Intermittent warning lights
- Erratic gauge readings
Estimated repair cost
Typical range in Australia (parts + labour)
$400 – $2500 AUD
Common causes
- Worn or contaminated turbo/supercharger component
- Vacuum leak or intake air leak
- Clogged filter or restricted flow
- Intermittent electrical connection issue
What should you do?
This code sits in an engine peripheral, typically emissions or forced induction. It will not take braking or steering away, but it can put the car into limp mode, cost you fuel and fail a roadworthy. Book it in rather than clearing it and hoping.
Get a diagnosis for YOUR car
Code P0240 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.