General Information

ABS/ESC
C1237 Primary pressure sensor - signal - General Information

Component Location





General Description

The one pressure sensor ,installed in the master cyclinder, sense the brake oil pressure to judge driver's brake intention when ESC is operating.

DTC Description

The failure is detected if the pressure sensor signal noise is out of normal range, or the pressure sensor signal is changed abnormally.
In spite of no brake switch signal, master cyclinder pressure exceeds 20bar when brake switch is normal.

DTC Detecting Condition





Schematic Diagram





Signal Waveform