P0240 OBD-II: Turbocharger/Supercharger Boost Sensor "B" Circuit
P0240 Severity
Should you fix P0240 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P0240?
The Boost Pressure Sensor tells the engine control module (PCM) how much boost is actually being created by the turbocharger. When PCM detects an incorrect signal from the Boost Pressure Sensor, the PCM will set code P0240.The PCM may also put the vehicle into "limp home mode", limiting the power of the engine, to protect the engine from additional damage.
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