P0442

27AC - P0442

Information saved in
DME

Fault code
27AC - P0442

Fault text
Fuel tank ventilation system and purge air system, minor
leak

Fault description
DMTL, small leak: Leak larger than 1.0 mm

Condition for fault identification
Test condition:
< 2400 m above sea level;
idle time > 30 s.
vehicle speed above 40 km/h > 10 min
engine start temp. 6.6 ° < as ambient temperature
Terminal condition: none
Voltage condition:
none

Condition for fault memory entry
none

Action in service
Check fuel filler cap
Check tank/hoses for leaks
START_SYSTEMCHECK_DMTL Conduct

Fault effect and breakdown warning
None
none

Driver information
Warning light:
MIL ON (US only)

Service instruction
Function testing on the DMTL (Diagnostic Module Tank
Leakage) can only be carried out provided that no faults
related to the DMTL have been logged. The conditions for
fault detection apply to the function test, but not to diagnosis
in the course of normal operation.