SAAB WIS ONLINE

ME9 / P0446 00

Read the instructions below then start the fault diagnostic procedure.

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

  P0446 00


EVAP Canister Close Valve, Stucked in Closed Posistion

Fault symptom

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

On-board diagnosis

Type of diagnosis:

Once per driving cycle.

Enable criteria:

Battery voltage must be between 10 - 18 V.
Engine running.
Tank pressure lower than -0.8kPa.
Tightness diagnosis active (P0456).
Purge valve closed.
When these conditions are met, the valve opens. Afterwards, diagnostics checks if the tank pressure has risen to the desired level within a calibrated time period.

Fault criteria:

Tank pressure does not increase when the valve opens.

Dependent:

None

System reaction to a fault:

Fuel adaption is blocked and reset.
Purge blocked.

Diagnostic help

Diagnosis regards:

Blockage of fresh air intake via shut-off valve to evaporative emission canister or from the evaporative emission canister to the tank.

Functions in the diagnostic tool related to the fault:

Activation:
Canister Close Valve

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