Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 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
• Canister load <=
n.a. [-]
• Evap purge flow
n.a.
• Or
• Canister load cal‐
culation n.a.
• Evap purge flow
n.a.
• Or
• Evap purge valve
n.a.
• Depending on
canister purge
closing:
• Canister purge
(conditions) n.a.
• Canister purge
valve ( closing
time ) n.a.
• And
• Choice of:
• Evap purge valve
n.a. or evap
purge valve n.a.
and modeled
MAF-integral >
0.0 g
• Depending on
transmission
type:
• For MT
• Integrated MAF
per cylinder >=
0.00 kg
• For AT
• Integrated MAF
per cylinder >=
0.00 kg
• For DCT
• Integrated MAF
per cylinder >=
0.00 kg
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
181
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
P2271
O2 Sen‐
sor Sig‐
nal
Biased/
Stuck
Rich
Bank 1
Sensor
2
Oxygen
Sensors
Rear Sig‐
nal
Range
Check
• Max. O2S rear
voltage > 0.87
V
• General condi‐
tions:
• Close the gap
stimulation re‐
quest active
• Vehicle speed >=
6 mph
• Catalyst over‐
heating protec‐
tion not active
• Turbine over‐
heating protec‐
tion not active
• O2S rear ready
• O2S front ready
• ECT @ cylinder
head > 60° C
• Modeled catalyst
temperature 470
– 780° C
• Difference be‐
tween dynamic
and stationary
catalyst tempera‐
ture -306 – 304° C
• Modeled catalyst
temperature once
after engine start
> 550° C
• Integrated MAF,
catalyst temp.
conditions fulfil‐
led >= 0.0 g
• Modeled EGT @
O2S rear <= 900°
C
• MAF per cylinder
30.0 – 200.0 kg/h
• MAF per cylinder
per stroke, lower
range >= 89.99
mg/rev
• MAF per cylinder
per stroke, upper
range <= 750.0
mg/rev
• And
• Low dynamic
conditions devia‐
tion actual
• And
• 60.0 –
70.0 s
• Once /
DCY
• 2
DCY
– Check the Oxy‐
gen Sensor 1 Af‐
ter Catalytic
Converter -
GX7- . Refer to
.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
182
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
• Target engine
speed < 150 RPM
• Dynamic MAF <
15.01 mg/rev
• Dynamic lambda
controller output
<= 20.0 %
• And
• Integrated MAF
after dynamic
conditions are ful‐
filled > 20.0 g
• Time after a cata‐
lyst purge phase
>= 1.0 s
• O2S rear voltage
@ diagnosis start
>= 0.55 V
• Integrated MAF
to start diagnosis
>= 5.0 g
• Integrated heat
energy >= 800.0
– 2,000.0 kJ
• Engine speed
1,248 – 3,008
RPM
• Coasting function
n.a
• O2S heater rear
active
• Lambda adapta‐
tion not active
• Valve lift n.a.
• And
• Depending on
lambda control:
• Intervention of
trim control be‐
havior activation
of catalyst diag‐
nosis < 0.10 [-]
• Or
• Intervention of
trim control dur‐
ing active catalyst
diagnosis < 0.20
[-]
• Depending on
canister purge:
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
183
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
• Canister load <=
n.a. [-]
• Evap purge flow
n.a.
• Or
• Canister load cal‐
culation n.a.
• Evap purge flow
n.a.
• Or
• Evap purge valve
n.a.
• Depending on
canister purge
closing:
• Canister purge
(conditions) n.a.
• Canister purge
valve ( closing
time ) n.a.
• And
• Choice of:
• Evap purge valve
n.a. or evap
purge valve n.a.
and modeled
MAF-integral >
0.0 g
• Depending on
transmission
type:
• For MT
• Integrated MAF
per cylinder >=
0.00 kg
• For AT
• Integrated MAF
per cylinder >=
0.00 kg
• For DCT
• Integrated MAF
per cylinder >=
0.00 kg
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
184
Rep. Gr. ST - Generic Scan Tool
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