Turbocharger Number 1 Speed High – Warning Level
|Fault Code: 595
Turbocharger Number 1 speed high – warning level. High turbocharger speed has been detected.
Engine power derate. The ECM uses an estimated turbocharger speed.
Turbocharger Speed Sensor Circuit
The electronic control module (ECM) provides +5 VDC to the turbocharger speed sensor signal pin. Circuitry inside the turbocharger speed sensor detects the movement of the turbocharger compressor blades and produces a speed signal. This signal is used by the ECM for engine controls.
The turbocharger speed sensor is located in the turbocharger compressor housing. Refer to Procedure 100-002 for a detailed component location view.
This fault code becomes inactive at key-on or any time the ECM detects a valid turbocharger speed signal. One cause of this fault code is high-frequency electrical noise. If the fault occurs intermittently, check the circuit and the sensor pigtail connector for opens or short circuits.