What does code P0242 mean?
High signal detected from boost sensor B indicating excessive pressure or short circuit
OBD-II Code
P0242 — Turbocharger Boost Sensor B Circuit High Input
High signal detected from boost sensor B indicating excessive pressure or short circuit
Common symptoms
- Overboost
- limp mode
- hesitation
Possible causes
- Signal shorted to voltage
- faulty sensor
- stuck solenoid
Initial recommendation
Test sensor, inspect solenoid and verify actual boost pressure.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0242 with your vehicle's actual symptoms for more complete diagnostic guidance.
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