Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 113
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitoring
Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
• O2S front 0.95 –
1.05 [-]
• Case 1:
• Integrated MAF
@ canister purge
per driving cycle
>= n.a. g
• Case 2:
• Integrated MAF
@ canister purge
valve >= 2.1 g
• Ratio MAF @
canister purge
and MAF per cyl‐
inder >= 0.00 [-]
• And
• Depending on
AAT:
• AAT >= 50° C
• Canister load <=
0.25 [-]
• Or
• AAT >= 30; < 50°
C
• Canister load <=
0.25 [-]
• Or
• AAT < 30° C
• Canister load <=
0.25 [-]
P0444
EVAP
System
Purge
Control
Valve
"A" Cir‐
cuit
Open
EVAP
Purge
Valve
Open Cir‐
cuit
• Output voltage,
lower range >=
1.92 – 2.21 V
• Output voltage,
upper range
(hardware val‐
ues) <= 2.85 –
3.25 V
• Engine start not
active
• Engine running
• Evap purge valve
opening signal
(PWM) 3.13 –
98.83 %
• Actuator com‐
manded off
• 2.0 s
• Contin‐
uous
• 2
DCY
– Check the EVAP
Canister Purge
Regulator Valve
1 - N80- . Refer
to
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
125
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitoring
Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
P0445
EVAP
System
Purge
Control
Valve
"A" Cir‐
cuit
Shorted
EVAP
Purge
Valve
Short To
Ground
• Output voltage
(hardware val‐
ues) 1.92 –
2.21 V
• Engine start not
active
• Engine running
• Evap purge valve
opening signal
(PWM) <= 98.83
%
• Actuator com‐
manded off
• 2.0 s
• Contin‐
uous
• 2
DCY
– Check the EVAP
Canister Purge
Regulator Valve
1 - N80- . Refer
to
.
EVAP
Purge
Valve
Short To
Battery
Plus
• Actuator tem‐
perature 160 –
200° C
• Or
• output current
(hardware val‐
ues) > 4.0...7.0
A
• Engine start not
active
• Engine running
• Evap purge valve
opening signal
(PWM) <= 3.13 %
• Actuator com‐
manded on
P0450
EVAP
System
Pres‐
sure
Sensor/
Switch
Circuit
NVLD
Switch
Open Cir‐
cuit
• Signal voltage
0.39 – 0.55 V
• Case 1:
• Engine running
• Case 2:
• Ignition off
• NVLD (EVAP-
System) diagnos‐
tic mode active
• 0.5 s
• Contin‐
uous
• 2
DCY
– Check the Fuel
Tank Leak De‐
tection Control
Module - J909- /
Fuel Tank Pres‐
sure Sensor -
G400- . Refer to
.
P0451
EVAP
System
Pres‐
sure
Sensor/
Switch
Circuit
Range/
Per‐
for‐
mance
NVLD
Switch
Function‐
al Check
Stuck
Close
• Natural vac‐
uum leak de‐
tection (NVLD)
switch position
closed
• Ignition off
• Fuel level < 85.10
%
• Fuel temperature
increase >= 5 K
• For time >= 1.0 h
• AAT >= 4° C
• Barometric pres‐
sure >= 73.0 kPa
• Time since igni‐
tion off > 20; <
1,440 min
• 0.1 s
• Once /
DCY
• 2
DCY
– Check the Fuel
Tank Leak De‐
tection Control
Module - J909- /
Fuel Tank Pres‐
sure Sensor -
G400- . Refer to
.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
126
Rep. Gr. ST - Generic Scan Tool
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitoring
Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
P0452
EVAP
System
Pres‐
sure
Sensor/
Switch
Circuit
Low
NVLD
Switch
Short To
Battery
Plus
• Signal voltage
> 3.0 V
• Case 1:
• Engine running
• Case 2:
• Ignition off
• NVLD (EVAP-
System) diagnos‐
tic mode active
• 0.5 s
• Contin‐
uous
• 2
DCY
– Check the Fuel
Tank Leak De‐
tection Control
Module - J909- /
Fuel Tank Pres‐
sure Sensor -
G400- . Refer to
P0453
EVAP
System
Pres‐
sure
Sensor/
Switch
Circuit
High
NVLD
Switch
Short To
Ground
• Signal voltage
< 0.24 V
• Case 1:
• Engine running
• Case 2:
• Ignition off
• NVLD (EVAP-
System) diagnos‐
tic mode active
• 0.5 s
• Contin‐
uous
• 2
DCY
– Check the Fuel
Tank Leak De‐
tection Control
Module - J909- /
Fuel Tank Pres‐
sure Sensor -
G400- . Refer to
P0456
EVAP
System
Leak
Detec‐
ted
(Very
Small
Leak)
EVAP
System
Small
Leak
Function‐
al Check
• Natural vac‐
uum leak de‐
tection (NVLD)
switch position
= open
• Ignition off
• Fuel level < 85.10
%
• Fuel temperature
drop >= 6 K
• For time > 1 h
• AAT >= 4° C
• Barometric pres‐
sure > 73.00 kPa
• Diff. barometric
pressure @ stop
and barometric
pressure @ start
< 0.65 kPa
• Time since igni‐
tion off > 90
[min] ; < 600 min
• 0.1 s
• Once /
DCY
• 2
DCY
– Check the EVAP
System visually
for any leaking
hoses or dam‐
age to compo‐
nents.
– Check the EVAP
Canister Purge
Regulator Valve
1 - N80- . Refer
to
– Check the Fuel
Tank Leak De‐
tection Control
Module - J909- /
Fuel Tank Pres‐
sure Sensor -
G400- . Refer to
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
127
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitoring
Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
P0461
Fuel
Level
Sensor
"A" Cir‐
cuit
Range/
Per‐
for‐
mance
Fuel Lev‐
el Plausi‐
bility
Check
• Diff. fuel con‐
sumption
• And
• Fuel level
changes <
-12.0; > 12.0 l
• General:
• Vehicle speed >
19 mph
• And
• Case 1:
• For tank full fuel
level > 96.09 %
• Fuel consump‐
tion since last re‐
fueling or last
plausibility check
> 30.0 l
• Case 2:
• For tank not full
fuel level <=
96.09 %
• Fuel consump‐
tion since last re‐
fueling or last
plausibility check
> 15.0 l
• 1.0 s
• Multi‐
ple
• 2
DCY
• Check the Fuel
Level Sensor -
G- . Refer to ap‐
propriate repair
manual.
P0462
Fuel
Level
Sensor
"A" Cir‐
cuit Low
CAN:
Fuel Lev‐
el Sensor
1 CAN
Commu‐
nication
With In‐
strument
Cluster
Module
• Instrument
cluster module
signal: short to
ground failure
• 0.5 s
• Contin‐
uous
• 2
DCY
• Check the Fuel
Level Sensor -
G- . Refer to ap‐
propriate repair
manual.
• Instrument
cluster module
signal: signal
range check
failure
P0463
Fuel
Level
Sensor
"A" Cir‐
cuit High
CAN:
Fuel Lev‐
el Sensor
1 CAN
Commu‐
nication
With In‐
strument
Cluster
Module
• Instrument
cluster module
signal: short to
battery / open
circuit failure
• 0.5 s
• Contin‐
uous
• 2
DCY
• Check the Fuel
Level Sensor -
G- . Refer to ap‐
propriate repair
manual.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
128
Rep. Gr. ST - Generic Scan Tool
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