OBD-II code · Powertrain (generic)
P0236 Turbocharger/Supercharger Boost Sensor "A" Circuit Range/Performance
The boost pressure A signal stays within electrical limits but does not match expected values for the current operating point. Typical causes are leaking charge piping, a stuck wastegate, or sensor drift.
Is it safe to drive with P0236?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCharge air piping leaking
- PossibleWastegate stuck or seized
- Less likelySensor drift
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3.5 h
- Emissions test
- Likely to fail
- Parts involved
- Boost Pressure Sensor, Charge Air Piping, Wastegate
Related codes
- P0235Turbocharger/Supercharger Boost Sensor "A" Circuit
- P0233Fuel Pump Secondary Circuit Intermittent
- P0234Turbocharger/Supercharger "A" Overboost Condition
- P0237Turbocharger/Supercharger Boost Sensor "A" Circuit Low
- P0238Turbocharger/Supercharger Boost Sensor "A" Circuit High
- P0239Turbocharger/Supercharger Boost Sensor B Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.