Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 171
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
P2237
O2 Sen‐
sor Pos‐
itive
Current
Control
Circuit/
Open
Bank 1
Sensor
1
Oxygen
Sensors
Front
Open Cir‐
cuit
Pump
Voltage
(VIP)
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG)
<= 1.20 V
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) <= 1.20 V
• And
• Choice of:
• Nernst voltage
(VN) > 4.40 V
• Or
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG) >
2.35 V
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG) <
-2.35 V
• Or
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) > 1.60 V
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) < -0.10 V
• Or
• Pump current
driver stage in‐
ternal value
• Or
• Measurement
WRAF sensor
label resistor >
n.a. Ohm
• O2S front (linear)
ready
• O2S ceramic
temperature >
785° C
• For time >= 10.0 s
• 2.3 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Oxy‐
gen Sensor 1
Before Catalytic
Converter -
GX10- . Refer to
.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
357
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
P2243
O2 Sen‐
sor Ref‐
erence
Voltage
Circuit/
Open
Bank 1
Sensor
1
Oxygen
Sensors
Front
Open Cir‐
cuit
Nernst
Voltage
(VN)
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG)
<= 1.20 V
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) <= 1.20 V
• And
• Choice of:
• Nernst voltage
(VN) > 4.40 V
• Or
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG) >
2.35 V
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG) <
-2.35 V
• Or
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) > 1.60 V
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) < -0.10 V
• Or
• Pump current‐
driver stage in‐
ternal value
• Or
• Measurement
WRAF sensor
label resistor >
n.a. Ohm
• O2S front (linear)
ready
• O2S ceramic
temperature >
785° C
• For time >= 10.0 s
• 2.3 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Oxy‐
gen Sensor 1
Before Catalytic
Converter -
GX10- . Refer to
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
358
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
P2251
O2 Sen‐
sor Neg‐
ative
Current
Control
Circuit/
Open
Bank 1
Sensor
1
Oxygen
Sensors
Front
Open Cir‐
cuit Virtu‐
al Ground
(VG)
• Nernst voltage
(VN) > 4.40 V
• Or
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG) >
2.35 V
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG) <
-2.35 V
• Or
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) > 1.60 V
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) < -0.10 V
• Or
• Pump current
driver stage in‐
ternal value
• Or
• Measurement
O2S front label
resistor > n.a.
Ohm
• And
• Choice of:
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG)
<= 1.20 V
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) <= 1.20 V
• Or
• Diff. pump volt‐
age (VIP) vs.
virtual ground
voltage (VG) >
1.20 V
• O2S front (linear)
ready
• O2S ceramic
temperature >
785° C
• For time >= 10.0 s
• 2.3 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Oxy‐
gen Sensor 1
Before Catalytic
Converter -
GX10- . Refer to
.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
359
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
• Diff. nernst
voltage (VN)
vs. virtual
ground voltage
(VG) > 1.20 V
P2257
AIR Sys‐
tem
Control
"A" Cir‐
cuit Low
Secon‐
dary Air
Injection
Pump
Relay
Short To
Ground
• Output voltage
(hardware val‐
ues) 1.92 –
2.21 V
• Engine running
• Actuator com‐
manded off
• 2.0 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Sec‐
ondary Air Injec‐
tion Pump Motor
- V101- / Secon‐
dary Air Injection
Pump Relay -
J299- . Refer to
P2258
AIR Sys‐
tem
Control
"A" Cir‐
cuit High
Secon‐
dary Air
Injection
Pump
Relay
Short To
Battery
Plus
• Actuator tem‐
perature > 160
– 200° C
• Or
• Output current
(hardware val‐
ues) driver
stage internal
value
• Engine running
• Actuator com‐
manded on
• 2.0 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Sec‐
ondary Air Injec‐
tion Pump Motor
- V101- / Secon‐
dary Air Injection
Pump Relay -
J299- . Refer to
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
360
Rep. Gr. ST - Generic Scan Tool
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