AC pressure sensor open circuit, or short circuit to ground.
â–¶ How to fix
• Check wiring (to pressure sensor) • Check connectors (to pressure sensor) • Check pressure sensor • Measure the sensor voltage between signal and ground
What you'll see
No driver-visible symptom recorded.
System reaction
The air condition (i.e. AC compressor) will be disabled, as long as the fault is present
Diagnostic depth
Detection
Impermissible signal from the air condition pressure sensor. The sensor voltage level is too low. The air condition pressure sensor has an open circuit, or is short circuit to ground.
Possible cause
• Defect wiring - open circuit on sensor signal (pin C15) - open circuit on sensor supply (pin C33) - short circuit to ground • Defect connectors • Defect pressure sensor