45-30Fault code 4460 · Pressure sensor

911 Turbo (996) PSM 05 45 45-30Fault code 4460 Pressure sensor Diagnostic conditions • Pressure sensor actual value is evaluated and displays an implausible value Possible cause of fault ♦Short circuit to ground/voltage or open circuit in circuit to con- trol module terminals 25, 26 and 42 ♦Plug connection on stop light switch faulty ♦Adjustment of the stop light switch not OK ♦Wiring/ plug connection faulty ♦Pressure sensor faulty (replace hydraulic unit) Affected terminals Terminals 25, 26 and 42 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Visual inspection ♦Check the pressure sensor plug ⇒ Step 2 Repair pressure sen- for damage and corrosion sor plug 2 Check supply voltage of ♦Switch off ignition approx. 5 V ♦Display 0 V: the pressure sensor for ⇒ Step 3 ♦Pull off pressure sensor plug Short circuit to short circuit to ground/ ♦Switch on ignition ground/open circuit open circuit in circuit between ♦Measure voltage between pin 3 PSM control mod- of pressure sensor plug and ule plug pin 42 and ground pressure sensor plug pin 3 ♦Display > 11 V Short circuit to volt- age between PSM control module plug pin 42 and pin 3 of the booster pump pressure sensor plug, or PSM contol module faulty → End 4503 Fault code 4460 45-30 page 1 Printed in Germany – 4, 2001 4460ps05