188 VW Golf & GTI Quick Reference Specication Book • September 2012
DTC Error Message Malfunction Criteria and
Threshold Value
P043F Evaporative Emission System
Leak Detection Reference
Orice High Flow
Engine off
• EVAP pump current during
reference measurement <
15.0 mA
Engine on
• EVAP pump current during
reference measurement > 15.0
mA
P0441 Evaporative Emission System
Incorrect Purge Flow
Deviation < 8% lambda
controller and 35% idle
controller
P0442 Evaporative Emission System
Leak Detected (Small Leak)
Time for pressure drop < 1.6 -
1.8 Sec.
P0444 Evaporative Emission System
Purge Control Valve Circuit
Open
Signal voltage > 4.70 - 5.40 V
P0447 Evaporative Emission System
Vent Control Circuit Open
• Open circuit signal voltage >
4.7 to 5.4 V
• Short to ground, signal voltage
> 27 to 3.26 V
P0448 Evaporative Emission System
Vent Control Circuit Shorted
• Short to battery positive, signal
current > 2.2 to 4.0 A
P0455 Evaporative Emission System
Leak Detected (Gross Leak/
No Flow)
Time for pressure drop
< 1 Sec.
P0456 Evaporative Emission System
Leak Detected (Very Small
Leak)
Time for pressure drop, < 4.5 -
6.0 Sec
P0458 Evaporative Emission System
Purge Control Valve Circuit
Low
Signal voltage 0 - 3.26 V
P0459 Evaporative Emission System
Purge Control Valve Circuit
High
Signal current > 2.2 A
P0491 Secondary Air System
Insufcient Flow
SAI pressure sensor vs modeled
pressure < 60 to 75%