DTC code
P0239
Turbocharger/Supercharger Boost Sensor B Circuit
Technical guide
reference — not individually verifiedSymptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Probable causes
high: Sensor failed
Diagnostic steps
Check the components involved: boost pressure sensor b, sensor wiring. Verify wiring and connectors before replacing any part. Job difficulty: medium. Typical European range — 80-500 EUR, 0.5-2 h. Reference values only.
Cross-checked technical synthesis (QA). It does not replace the manufacturer's procedure.
AI here is a librarian: this page shows only what mechanics confirmed, or says “unknown”. It never suggests a diagnosis — MECCANIC interprets the code, never your car.
0 confirmed cases on P0239
Nothing confirmed yet for this code. No guess is offered on purpose.
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