AC pressure sensor short circuit to battery
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 high. The air condition pressure sensor is short circuit to supply voltage.
Possible cause
• Defect wiring - open circuit on sensor ground (pin C24) - short circuit to supply voltage • Defect connectors • Defect pressure sensor