Error code
OBD2 P0242
OBD2P0242
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Turbo/Super Charger Boost Sensor 'B' Circuit High.
Severity
moderateCan drive, but performance issues may occur.
Summary
P0242 indicates that the boost sensor 'B' circuit in the turbo/supercharger system is reading too high, likely due to an issue with the MAP (Manifold Absolute Pressure) sensor B or its wiring.
Common Causes
- Wiring short to positive on the MAP sensor
- Faulty MAP sensor
Fixes
- Replace faulty MAP sensor or repair wiring issue.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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