C0131 08

C0131 08
Pressure sensor Circuit, Signal not Plausible
Fault symptom
Warning lamp lights.
Messages shown in SID.
On-board diagnosis
Type of diagnosis:
Continuous
Enable criteria:
Ignition ON.
^ Test 1
Brake light switch not activated.
Vehicle accelerating with engine power.
0 Test 2
Vehicle speed more than 7 km/h.
Acceleration more than 2 m/s2
No TCS regulation.
^ Test 3
Brake light switch activated.
Retardation more than 5 m/s2.
^ Test 4
Brake light switch not activated. No TCS regulation.
Vehicle accelerating with engine power.
Fault criteria:
^ Test 1
Pedal pressure exceeds 25 bar for more than 2.5 seconds. 0 Test 2
Pedal pressure exceeds 50 bar for more than 2.5 seconds. 0 Test 3
Brake light switch activated more than 5 times and pedal pressure less than 1.4 bar for more than 2.5 seconds.
^ Test 4
Pedal pressure exceeds 20 bar.
System reaction to a fault:
No ESP function
Diagnostic help
Diagnosis regards:
Electrical fault in the component.
Functions in the diagnostic tool related to the fault:
Test value:
Brake Light Switch
Pedal Pressure
(See also description of readings/activations in diagnostic tool)