Code 57-xx P1 Shorted or 58-xx P2 Shorted - Pressure transducer signal wire is shorted.

What does 57-02 / 57-42 / 58-02 / 58-42 mean?

This fault indicates that the signal wire for pressure transducer P1 (codes 57-xx) or P2 (codes 58-xx) is 'shorted,' meaning it's returning less than 0.5V DC. The most common cause is the sensor wire shorting to the metal chassis of the unit.

• Sensor wire for P1 or P2 transducer shorted to the metal chassis.
• Power wire not supplying +5V DC to the transducer.
• Signal wire not returning DC Voltage between 0.5-4.5 VDC.
• Faulty pressure transducer part.

Click steps to track your progress.

1. 1

   Visually inspect the wiring harnesses for pressure transducers P1 and P2, especially the green signal wire (GRN), for any damage or contact with metal.

2. 2

   Ensure the sensor wire is not shorted to the metal chassis or any other conductive surface.

3. 3

   Verify that the red power wire (RED) is supplying +5V DC and the green signal wire (GRN) is returning a DC voltage between 0.5-4.5 VDC.

4. 4

   If connections and voltages appear correct, the pressure transducer itself may be faulty and require replacement by a technician.