Electrical error on tag/middle axle brake air pressure sensor. Voltage is too high.
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
Functions dependent on the tag axle brake pressure sensor might be degraded.
Diagnostic depth
Detection
Impermissible signal from the tag/middle axle brake pressure sensor. The sensor voltage level is too high.
Possible cause
Defect wiring - open circuit on sensor ground (pin B11) - short circuit to supply voltage • Defect connectors • Defect sensor