T8 / P0499 00

Read the instructions below then start the fault diagnostic procedure.

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

P0499 00

Fault symptom

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

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Battery voltage must be between 11 - 16 V.

Engine running.

Shut-off valve active.

NONE of the following DTCs must be detected:

P0444, P0445

P0686, P0687

Fault criteria:

When voltage on the output exceeds 2.0 V for more than 1 s.

Dependent:

None

System reaction to a fault:

Fuel adaption is blocked and reset.

Purge blocked.

OK report:

Fault criteria NOT fulfilled for 6 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:

•	Canister Close Valve

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