P0442

2779 - P0442

Information saved in
DME

Fault code
2779 - P0442

Fault text
DMTL leakage detection

Fault description


Condition for fault identification
Test condition:
v = 0, n=0, pumg >= K_DMTL_P_Min,
K_DMTL_FST_Min <= tank fuel level <=
K_DMTL_FST_Max, K_DMTL_TEMP_Min <= tumg <=
K_DMTL_TEMP_Max, tmot_start >=
K_DMTL_TEMP_Start_Min
Terminal condition: Terminal 15 OFF
Voltage condition:
K_DMTL_Plus_Min <= ub <= K_DMTL_Plus_Max

Condition for fault memory entry
Current rise in diagnosis is less than (dmtl_i_ref -
dmtl_i_min) x K_DMTL_I_FAKT_GROB + dmtl_i_min

Action in service
1. Check filler cap seal
2. Pressurize tank and search for leaks

Fault effect and breakdown warning
Check Control message / possible gasoline odor

Driver information
Warning light:
32- Fuel filler cap not on!, if just refueled

Service instruction
none