Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 142
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
@ diagnosis start
>= 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
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
241
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
• Coasting function
not active
• 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
242
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
• 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
P0140
O2 Sen‐
sor Cir‐
cuit No
Activity
Detec‐
ted Bank
1 Sen‐
sor 2
Oxygen
Sensors
Rear
Open Cir‐
cuit
• Internal resist‐
ance of O2S
(binary) >
25,000.0 Ohm
• 2.5 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Oxy‐
gen Sensor 1 Af‐
ter Catalytic
Converter -
GX7- . Refer to
P0141
O2 Sen‐
sor
Heater
Circuit
Bank 1
Sensor
2
Oxygen
Sensors
Heater
Rear Out
Of Range
High
• Internal resist‐
ance of O2S
(binary) 700.0 –
25,000.0 Ohm
• O2S heater com‐
manded on
• For time >= 10.0 s
• 20 s
• Once /
DCY
• 2
DCY
– Check the Oxy‐
gen Sensor 1 Af‐
ter Catalytic
Converter -
GX7- . Refer to
P0149
Fuel
Timing
Error
Injection
Valves
Supply
Voltage
Out Of
Range
Low
• Boost voltage <
30.0 V
• Engine running
>= 0.3 s
• 3.6 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the En‐
gine Control
Module - J623- .
Refer to appro‐
priate repair
manual.
• Boost voltage
<= 50.0 V
Injection
Valves
Supply
Voltage
Out Of
Range
High
• Boost voltage >
75.0 V
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
243
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
P0171
System
Too
Lean
Bank 1
Fuel Sys‐
tem, Sys‐
tem Too
Lean
• Lambda con‐
troller output >
35.0 %
• Lambda control
closed loop
• Mass air flow >
60.0 mg/rev
• Engine speed >
576 RPM
• ECT @ cylinder
head > 20° C
• IAT at intake
manifold > -48° C
• AAT > -48° C
• And
• Evap purge valve
closed
• Or
• Canister load <=
1.20 [-]
• Evap purge flow
at max. value
• Or
• Depending on
canister purge
min:
• Lower limit of
lambda controller
output n.a.
• Or
• Upper limit of
lambda controller
output n.a.
• And
• Evap purge flow
at min. value
• 60 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the intake
and vacuum ho‐
ses for leaks,
Check the Posi‐
tive Crankcase
Ventilation, also
make sure the
oil dipstick is
properly se‐
cured.
– Listen to and vis‐
ually inspect the
Exhaust system
to insure there
are no leaks.
– Check the Oxy‐
gen Sensor 1
Before Catalytic
Converter -
GX10- . Refer to
– Check the Oxy‐
gen Sensor 1 Af‐
ter Catalytic
Converter -
GX7- . Refer to
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
244
Rep. Gr. ST - Generic Scan Tool
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