Content .. 92 93 94 95 ..

Volkswagen Golf / Golf GTI / Golf Variant. Service manual - part 94

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

P0030

HO2S

Heater

Control

Circuit

Bank 1

Sensor

Oxygen

Sensors

Heater

Front

Open Cir‐

cuit

• O2S upstream

heater voltage

lower range

1.92 – 2.21 V

• O2S upstream

heater voltage

upper range

2.85 – 3.25 V

• 2.5 s
• Contin‐

uous

• 2

DCY

– Check the Oxy‐

gen Sensor 1

Before Catalytic

Converter -

GX10- . Refer to

P0031

HO2S

Heater

Control

Circuit

Low

Bank 1

Sensor

Oxygen

Sensors

Heater

Front

Short To

Ground

• O2S upstream

heater voltage

lower range

1.92 – 2.21 V

• 2.5 s
• Contin‐

uous

• 2

DCY

– Check the Oxy‐

gen Sensor 1

Before Catalytic

Converter -

GX10- . Refer to

P0032

HO2S

Heater

Control

Circuit

High

Bank 1

Sensor

Oxygen

Sensors

Heater

Front

Short To

Battery

Voltage

• O2S upstream

heater driver

temperature >

160.0 – 200.0°

• Or
• O2S upstream

heater driver

output current

> 8.0 – 12.0 A

• EGT @ O2S front

>= -273° C

• Actuator com‐

manded on

• 2.5 s
• Contin‐

uous

• 2

DCY

– Check the Oxy‐

gen Sensor 1

Before Catalytic

Converter -

GX10- . Refer to

P0036

HO2S

Heater

Control

Circuit

Bank 1

Sensor

Oxygen

Sensors

Heater

Rear

Open Cir‐

cuit

• O2S down‐

stream heater

voltage lower

range 1.92 –

2.21 V

• O2S down‐

stream heater

voltage upper

range 2.85 –

3.25 V

• Engine not in

start process

• 2.5 s
• Contin‐

uous

• 2

DCY

– Check the Oxy‐

gen Sensor 1 Af‐

ter Catalytic

Converter -

GX7- . Refer to

P0037

HO2S

Heater

Control

Circuit

Low

Bank 1

Sensor

Oxygen

Sensors

Heater

Rear

Short To

Ground

• O2S down‐

stream heater

voltage lower

range 1.92 –

2.21 V

• Engine not in

start process

• 2.5 s
• Contin‐

uous

• 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

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

P0038

HO2S

Heater

Control

Circuit

High

Bank 1

Sensor

Oxygen

Sensors

Heater

Rear

Short To

Battery

Voltage

• O2S down‐

stream heater

driver tempera‐

ture > 160.0 –

200.0° C

• Or
• O2S down‐

stream heater

driver output

current > 8.0 –

12.0 A

• EGT @ O2S rear

(binary) >= -273

• Actuator com‐

manded on

• Engine not in

start process

• 2.5 s
• Contin‐

uous

• 2

DCY

– Check the Oxy‐

gen Sensor 1 Af‐

ter Catalytic

Converter -

GX7- . Refer to

P0045

Turbo‐

charger/

Super‐

charger

Boost

Control

"A" Cir‐

cuit/

Open

Turbo‐

charger

Boost

Pressure

Control

Valve

Open Cir‐

cuit

• Bypass valve

driver load re‐

sistance > 200

kOhm

• Deviation be‐

tween actual and

filtered boost

pressure actuator

position <= 5.0 %

• Boost pressure

actuator control‐

ler not active

• Time delay > 1.0

• 0.4 s
• Contin‐

uous

• 2

DCY

– Check the

Charge Pres‐

sure Actuator -

V465- / Charge

Pressure Actua‐

tor Position Sen‐

sor - G581- . Re‐

fer to

P0068

MAP/

MAF -

Throttle

Position

Correla‐

tion

Leak to

Intake

Manifold

Rationali‐

ty Check

• Difference be‐

tween target in‐

take manifold

pressure and

actual intake

manifold pres‐

sure < -15.0 –

-10.0 kPa

• Time after engine

start > 5.0 s

• Barometric pres‐

sure > 73.0 –

105.0 kPa

• Engine speed >

576 – 512 RPM

• Engine speed <

3,000 RPM

• IAT @ intake

manifold > -48° C

• ECT @ cylinder

head > -48° C

• Difference be‐

tween engine

speed and fil‐

tered engine

speed < 8,160

RPM

• Difference be‐

tween MAF set

point and filtered

MAF set point <

15.01 mg/rev

• Throttle actuator

commanded on

• 5.0 s
• Contin‐

uous

• 2

DCY

– Check the In‐

take system for

vacuum leaks,

make sure oil

dipstick is push‐

ed properly into

place.

– Check the In‐

take Manifold

Sensor - GX9- .

Refer to

– Check the Throt‐

tle Valve Control

Module - GX3- .

Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

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

Intake Air

System

Rationali‐

ty Check

• General condi‐

tions:

• Filtered lamb‐

da controller in‐

cluded correc‐

tion and adap‐

tion -30.00 –

30.00 %

• Lambda con‐

trol active

• And
• Deviation throt‐

tle area control‐

ler < -60.00 %

• Modeled pres‐

sure quotient

0.10 – 0.60 [-]

• Gradient of intake

manifold pres‐

sure >= -199.90;

<= 199.90 kPa/s

• Vehicle speed <=

1 mph

P0070

Ambient

Air Tem‐

perature

Sensor

Circuit

"A"

CAN:

Ambient

Air Tem‐

perature

Sensor

Short To

Battery

Voltage

Or Open

Circuit

• AAT sensor

voltage (hard‐

ware values) >

4.50 V

• 2.0 s
• Contin‐

uous

• 2

DCY

– Check the Out‐

side Air Temper‐

ature Sensor -

G17- . Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

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

P0071

Ambient

Air Tem‐

perature

Sensor

Circuit

"A"

Range/

Per‐

for‐

mance

Ambient

Air Tem‐

perature

Sensor

Cross

Check

• High side:
• Diff. AAT @

cold start vs.

IAT @ manifold

@ cold start >

25 K

• Diff. AAT @

cold start vs.

ECT @ radiator

outlet @ cold

start > 25 K

• Or
• Low side:
• Diff. IAT @

manifold @

cold start vs.

AAT @ cold

start > 25.0 K

• Diff. ECT @ ra‐

diator outlet @

cold start vs.

AAT @ cold

start > 25.0 K

• Engine off time

>= 360.0 min

• Engine off time

plausible

• Time after engine

start < 1,400.0 s

• Depending on

temperature

slope:

• Diff. actual vs

previous IAT <

256.0 K

• Diff. actual vs

previous ECT @

cylinder head <

256.0 K

• Diff.. actual vs

previous ECT@

radiator outlet <

256.0 K

• Diff. actual vs

previous AAT <

256.0 K

• For time >= 1.0 s

• 0.1 s
• Once /

DCY

• 2

DCY

– Check the Out‐

side Air Temper‐

ature Sensor -

G17- . Refer to

P0072

Ambient

Air Tem‐

perature

Sensor

Circuit

"A" Low

CAN:

Ambient

Air Tem‐

perature

Sensor

Short To

Ground

• AAT sensor

voltage < 0.10

• 2.0 s
• Contin‐

uous

• 2

DCY

– Check the Out‐

side Air Temper‐

ature Sensor -

G17- . Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

Rep. Gr. ST - Generic Scan Tool

Content .. 92 93 94 95 ..