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ESP / C0161 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: TCS/ESP warning lamp comes on. Message appears in display.

  C0161 00


Brake Switch Circuit, Malfunction

Fault symptom

TCS/ESP warning lamp comes on.

Message appears in display.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.
Vehicle speed over 24 km/h

Fault criteria:

Control module input short circuit.

System reaction to a fault:

No TCS/ESP function

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

IMPORTANT
Fault in connector H42-2 / H42-3 is often a cause of this DTC.
A DTC can be generated if the brake pedal is depressed while the car is accelerating.

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:
Brake lights switch.
(See also description of readings/activations in diagnostic tool)