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P0441

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE.

P0441


EVAP Purge Valve. Malfunction.


Fault symptoms


• CHECK ENGINE.


On-Board Diagnostics

Type of diagnosis:


- Once per driving cycle. Interrupted when fault criteria fulfilled or OK reported. Restarts next driving cycle.


Enable criteria:


- General conditions for this trouble code: When starting the engine, the atmospheric pressure must exceed 78 kPa and the engine coolant and intake air temperatures must exceed -7°C.

- Test 1: Starting coolant temperature lower than 40°C. Purge active. Idling. Max. one change in status of brake light switch. Purge adaptation higher than -7 %. Intake air pressure at least 20 kPa below atmospheric pressure. Car stationary for 5 s.

Diagnosis starts once the above conditions are fulfilled. If the diagnosis is interrupted, the speed must exceed 0 on one occasion before it is allowed to restart. Diagnosis then proceeds as follows: Shut-off valve is activated simultaneously as purge is interrupted for 3.5 s. Meanwhile, the tank pressure is observed.

- Test 2: Starting coolant temperature higher than 40°C or Test 1 indicated a leak. Approved transition diagnosis of oxygen sensor 1. Purge active. Idling. Max. one change in status of brake light switch. Purge adaptation higher than -6 %. Intake air pressure at least 20 kPa below atmospheric pressure. Car stationary for 5 s.

Diagnosis starts once the above conditions are fulfilled. If the diagnosis is interrupted, the speed must exceed 0 on one occasion before it is allowed to restart. Diagnosis then proceeds as follows: Shut-off valve is activated simultaneously as purge is interrupted for 3.5 s. Meanwhile, the tank pressure is observed.


Fault criteria:


- Tests 1 and 2: If the pressure drops more than 0.25 kPa then an internal leak has been detected in the EVAP canister purge valve.

- Trouble code P0441 is generated once fault criteria have been fulfilled during both Test 1 and Test 2 during the same driving cycle and dependents are OK.


Dependents:


- P0444, P0445, P0501, P0502, P0506, P0507, P1444, P1445, P1576 and P1577.


System reaction to a fault:


- None.


OK report:


- Test 1 or Test 2 performed once and fault criteria not fulfilled.


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


- Type III.


Diagnostic help

Fault diagnosis concerns a valve fault.

Functions in the diagnostic tool related to the fault:


• Diagnostic status for the diagnosis.

• Activate EVAP diagnosis.


See also description of readings under "Read Values" menu for more information.

Note

To generate a trouble code, Test 1 must indicate a leak first and then Test 2 during the same driving cycle. Starting coolant temperature must be below 40°C (104°F) if this is to take place. The trouble code can therefore not be generated if the engine was warm when started.

During the final check of a rectified fault, the diagnostic tool activation command must be used so that Test 1 is initiated irrespective of starting temperature.