Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 173
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitor‐
ing 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
• O2S rear volt‐
age > 0.25 V
• Intrusive lamb‐
da ramp lean >
1.12 [-]
• General condi‐
tions:
• Catalyst monitor
lambda modula‐
tion request ac‐
tive
• Intrusive lambda
ramp request ac‐
tive
• Vehicle speed >=
19 mph
• Barometric pres‐
sure >= 0.00 kPa
• 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
• IAT @ manifold >
-48° C
• Modeled catalyst
temperature @
start of diagnosis
> 510° C
• Modeled catalyst
temperature @
during diagnosis
470 – 830° C
• Diff. between dy‐
namic and sta‐
tionary catalyst
temperature -150
– 150° C
• Integrated air
mass, catalyst
temp. conditions
fulfilled >= 0.0 g
• Modeled EGT @
O2S rear <= 900°
C
• MAF per cylinder
22.50 – 150.00
kg/h
• Air mass , lower
range >= 0.00
mg/rev
• 0
(FTP75:
50) 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
3. Diagnosis and Testing
365
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitor‐
ing Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
• Air mass , upper
range <= 650.00
– 1,389.00 mg/
rev
• And
• Engine load n.a.
%
• Air mass setpoint
n.a. g/rev
• Accelerator pedal
value n.a. %
• For time n.a. s
• And
• Low dynamic
conditions
• Dynamic engine
speed < 50 rpm
• Dynamic air
mass < 50.00 mg/
rev
• Dynamic lambda
controller output
< 20.00 %
• And
• Integrated air
mass after dy‐
namic conditions
are fulfilled > 20.0
g
• Time after a cata‐
lyst purge phase
>= 1.0 s
• O2S rear voltage
>= 0.55 V
• Integrated air
mass >= 0.0 g
• Integrated heat
energy >= 550.00
– 700.00 kJ
• Engine speed
1,088 – 3,008
rpm
• Deviation of
lambda controller
output < 50.00 %
• Proportional part
of secondary fuel
control loop not
calibrated %
• Coasting function
not active
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
366
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
Monitor‐
ing Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
• O2S heater rear
active
• Lambda adapta‐
tion not active
• Valve lift not ac‐
tive
• And
• Depending on
Lambda control:
• Sum of integral
and proportional
part of secondary
fuel control loop
before diagnosis
< | 0.10 | [-]
• Or
• Sum of integral
and proportional
part of secondary
fuel control loop
during diagnosis
< | 0.25 | [-]
• Depending on
canister purge:
• 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.
• Or
• Evap purge valve
n.a.
• Or
• Evap purge n.a.
• Or
• Depending on
canister purge
closing:
• Canister purge
(conditions) n.a.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
367
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitor‐
ing Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
• Canister purge
valve ( closing
time ) n.a. [s]
• And
• Choice of:
• Evap purge valve
n.a.
• Or
• Evap purge valve
n.a.
• And
• Modeled air mass
integral > 50.0 g
• Integrated air
mass per cylinder
>= 1.40 – 1.80 kg
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
368
Rep. Gr. ST - Generic Scan Tool
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