ESP / C0121 01

Read the instructions below then start the fault diagnostic procedure.

Symptom: ABS warning lamp on Message appears in display. Steering column lock not working.

C0121 01

Fault symptom

ABS warning lamp on

Message appears in display.

Steering column lock not working.

On-board diagnosis

Type of diagnosis:

Upon start-up.

Enable criteria:

Ignition ON.

Fault criteria:

When voltage on output exceeds 2V.

System reaction to a fault:

No ABS function

No TCS/ESP function

Diagnostic help

Diagnosis regards:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:

Valve Feed

Activation:

Valve Feed

(See also description of readings/activations in diagnostic tool)