P0441

27A4 - P0441

Information saved in
DME

Fault code
27A4 - P0441

Fault text
Tank-venting valve, function test

Fault description
Evaporative Emission System Incorrect Purge Flow

Condition for fault identification
Test condition:
Variation in lambda factor less than 0.04
(K_TE_OBD_LAM_DELTA) and variation in ionic current
integral less than 25% (K_TE_OBD_AUSS_DELTA) and
25% (K_TE_OBD_AUSS_DELTA_NEG) and idle reaction
less than 6.5% (K_TE_OBD_LL_DELTA) during opening
and idle reaction
Terminal condition: Engine idle
Voltage condition:
Battery voltage > 9V (k_ed_ubmin)

Condition for fault memory entry
none

Action in service
1. Conduct TEV evaporative purge control test routine
2. Check hose connections
3. Check TEV, replace as indicated
4. Conduct TEV evaporative purge control test routine again
after repair

Fault effect and breakdown warning
Possible fuel odor / MIL on after engine runs 2x

Driver information
Warning light:
MIL

Service instruction
none