Volkswagen Golf 2013 Quick Reference Specification Book page 271

DTC Error Message
P0420 Catalyst System Efficiency
Below Threshold
P043E Evaporative Emission System
Leak Detection Reference
Orifice Low Flow
P043F Evaporative Emission System
Leak Detection Reference
Orifice High Flow
P0441 Evaporative Emission System
Incorrect Purge Flow
P0442 Evaporative Emission System
Leak Detected (Small Leak)
P0444 Evaporative Emission System
Purge Control Valve Circuit
Open
P0447 Evaporative Emission System
Vent Control Circuit Open
P0448 Evaporative Emission System
Vent Control Circuit Shorted
P0455 Evaporative Emission System
Leak Detected (gross leak)
P0456 Evaporative Emission System
Leak Detected (very small
leak)
P0458 Evaporative Emission System
Purge Control Valve Circuit
Low
P0459 Evaporative Emission System
Purge Control Valve Circuit
High
P0491 Secondary Air System
Insufficient Flow. Flow Check
During Catalyst Heating.
(PZEV)
VW Golf & GTI Quick Reference Specification Book • September 2012
Malfunction Criteria and
Threshold Value
• Oxygen storage capacity
(OSC) vs OSC value of
borderline catalyst < 1.00
• EVAP pump current during
reference measurement > 40
mA
• EVAP pump current during
reference measurement < 15
mA
• Actual EVAP pump current vs.
difference from last reading >
1.70
• Current pump pressure vs.
modeled pump pressure < 9
hPa
• Signal voltage 4.70 - 5.40 V
• Signal voltage > 4.70 - 5.40 V
• Signal current > 2.2 to 4 A
or
• Signal voltage < 2.74 to 3.26 V
• Time for pressure drop < 0.95
Sec.
• EVAP system leakage area
calculated from pump current
curve > 0.17 mm squared.
• Signal voltage 0 to 3.26 V
• Signal current, > 2.2 A
• SAI pressure vs. modeled SAI
< 50 - 72%
or
• Absolute deviation of raw
pressure signal from filtered
signal mean value < 8.98 hPa
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