T8 / P0203 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Engine misfires or does not start.

P0203 00

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

Engine misfires or does not start.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Battery voltage must be between 11 - 16 V.

Main relay voltage exceeds 6V.

Starter motor cranking or engine running.

Fault criteria:

When voltage on output is below 5.5V when inactive or exceeds 5.5V when active.

Dependent:

None

System reaction to a fault:

Closed loop is blocked.

Fuel adaption is blocked.

OK report:

Fault criteria NOT fulfilled for 2 s.

Fault handling:

Type III

(See section Fault handling III, "Other emission-related components and functions" for more information.)

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:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Activation of output for injector 3.

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