ESP / C0131 08
Read the instructions below then 
start the fault diagnostic procedure.
Symptom: Warning lamp lights.
Message appears in display.
	
Pressure sensor Circuit, Signal not Plausible
Fault symptom
Warning lamp lights.
Message appears in display.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Brake light switch not activated. | 
| Vehicle accelerating with engine power. | 
| Vehicle speed more than 7 km/h. | 
| Acceleration more than 2 m/s2 | 
| Brake light switch activated. | 
| Retardation more than 5 m/s2. | 
| Brake light switch not activated. | 
| Vehicle accelerating with engine power. | 
Fault criteria:
| Pedal pressure exceeds 25 bar for more than 2.5 seconds. | 
| Pedal pressure exceeds 50 bar for more than 2.5 seconds. | 
| Brake light switch activated more than 5 times and pedal pressure less than 1.4 bar for more than 2.5 seconds. | 
| Pedal pressure exceeds 20 bar. | 
System reaction to a fault:
Diagnostic help
Diagnosis regards:
| Electrical fault in the component. | 
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |