DTC code
P0236
Turbocharger/Supercharger Boost Sensor A Circuit Range/Performance
Technical guide
Symptoms
- Low-power engine operation such as idling and cruising may or may not be affected
- high-power engine operation such as heavy acceleration and high speed may be severely debilitated
- abnormal forced-induction noises
- exhaust smoke
- elevated engine temperatures
- erratic boost pressure gauge readings (if equipped)
Probable causes
- Air leaks in intake manifold
- turbocharger
- intercooler
- or vacuum control preventing proper pressure buildup
- stuck or leaking wastegate preventing proper boost pressure regulation
- worn turbocharger bearings
- damaged impeller blades or lubrication problems
- water intrusion or corrosion affecting sensor signals
- faulty pressure sensor
Diagnostic steps
- Verify engine condition; replace fouled spark plugs if needed.
- Inspect all air intake hoses, intercooler lines, and vacuum lines for leaks and secure connections.
- Check turbocharger-to-intake flange connection for leaks.
- Clear codes and retest.
- Connect boost gauge and snap throttle to 5,000 rpm to measure pressure.
- Based on readings, diagnose wastegate operation or perform electrical voltage testing on sensor circuits.
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 P0236
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