Can I drive with a bad turbo sensor?
You should never drive with a faulty boost pressure sensor. Without a boost pressure sensor, it’s quite common for the ECM to direct too much power to the turbocharger, which can have catastrophic consequences for your engine.
How does the turbo boost sensor work in a supercharger?
The turbo boost sensor is a variable resistor. The PCM supplies a 5 volt reference signal to the boost sensor. When boost pressure is low the resistance of the sensor is high so only a small percentage of the reference signal returns to the PCM. As pressure increases, resistance decreases so more of the reference signal returns to the PCM.
What do you call a high voltage turbocharger sensor?
Vehicles of different manufacturer and model of course, have different definitions and specifications on troubleshooting and repair. For generic vehicles for example, they call this error code Turbocharger/Supercharger Boost Sensor “A” Circuit High. For GM vehicles, they call it Turbocharger Boost Sensor Circuit High Voltage.
How does the p0238 turbocharger boost sensor work?
Zero boost pressure equals about .5 volts, maximum boost reads about 4.5 volt. DTC P0238 is set when the PCM sees a boost pressure voltage greater than 4 volts at a time when no boost is being commanded. When P0238 is set the PCM will turn on the check engine light and substitute a generic value for actual boost pressure and ignore the sensor.
What causes a damaged turbo boost pressure sensor?
Damaged turbo boost pressure sensor A connector, resulting on short to ground Shorted to ground wiring of between the PCM and the sensor of turbo boost pressure sensor A Defective boost sensor “A”
The turbo boost sensor is a variable resistor. The PCM supplies a 5 volt reference signal to the boost sensor. When boost pressure is low the resistance of the sensor is high so only a small percentage of the reference signal returns to the PCM. As pressure increases, resistance decreases so more of the reference signal returns to the PCM.
Vehicles of different manufacturer and model of course, have different definitions and specifications on troubleshooting and repair. For generic vehicles for example, they call this error code Turbocharger/Supercharger Boost Sensor “A” Circuit High. For GM vehicles, they call it Turbocharger Boost Sensor Circuit High Voltage.
Zero boost pressure equals about .5 volts, maximum boost reads about 4.5 volt. DTC P0238 is set when the PCM sees a boost pressure voltage greater than 4 volts at a time when no boost is being commanded. When P0238 is set the PCM will turn on the check engine light and substitute a generic value for actual boost pressure and ignore the sensor.
Damaged turbo boost pressure sensor A connector, resulting on short to ground Shorted to ground wiring of between the PCM and the sensor of turbo boost pressure sensor A Defective boost sensor “A”