C1750 - ACCELERATOR POSITION SENSOR OUT OF RANGE

The APP (Accelerator Position Sensor) is usually attached to the throttle body, and its function is to monitor the movement of the accelerator pedal. This sensor converts pedal movement to an electronic input signal that is sent to the PCM (Powertrain Control Module), which uses it to open or close the throttle body.

When the accelerator pedal is depressed, the pressure spins the throttle plate within the throttle body, thus opening an internal passage of the unit, which allows airflow to pass through. As air moves through the throttle passage into the intake manifold, the MAF sensor activates and signals the ECU to force fuel into the fluid injection system

The ABS control module constantly monitors the APP sensor to ensure good system performance. If electrical values outside the manufacturer’s expectations are discovered on this sensor, the diagnostic code C1750 OBDII will be set.

• Check Engine lamp illuminated.
• ABS warning illumination.

The reasons for setting the C1750 OBD2 fault code are:

• Wires or connectors that are related to the Accelerator Position Sensor may have been damaged.
• The Accelerator Position Sensor may be in poor condition.

To troubleshoot the DTC C1750 OBDII code you must do the following

• Consult the TSB (Technical Service Bulletins).
• Locate the Throttle Position Sensor and proceed to check all the wires that are related to it. If you discover damage such as burns or wear, you should make any necessary repairs or replacements.
• Check the circuit connectors for high levels of corrosion. If this is the case, make the applicable corrections.
• Check the throttle position sensor. Follow the manufacturer's recommendations and if determined to be defective, replace it.