Content .. 120 121 122 123 ..

Volkswagen Golf / Golf GTI / Golf Variant. Service manual - part 122

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

P2187

System

Too

Lean at

Idle

Bank 1

Fuel Sys‐

tem Di‐

rect Fuel

Injection

System

Too Lean

• Case 1:
• Adaptive value

>= 2.80 mg/rev

• Case 2:
• Adaptive value

n.a.

• Barometric pres‐

sure > 73.0 kPa

• MAF > 60.0 mg/

rev

• Engine speed >

576 RPM

• ECT @ cylinder

head > 20° C

• IAT @ manifold >

-48° C

• AAT > -48° C
• Lambda set point

0.95 – 1.05 [-]

• Lambda control

closed loop

• Integrated MAF

>= 5.0 – 200.0 g

• Lambda adapta‐

tion active

• Vehicle speed < 4

mph

• Driver request

low dynamics

• And
• Mass fuel flow

lower range >

0.00 mg/rev

• Mass fuel flow

upper range <

0.00 – 17.74 mg/

rev

• Or
• 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

• 5.0 s
• Contin‐

uous

• 2

DCY

– Check the intake

and vacuum ho‐

ses visually for

leaks. Check the

Positive Crank‐

case Ventilation

visually. 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

– Check the In‐

take Manifold

Sensor - GX9- .

Refer to

– Check the EVAP

Canister Purge

Regulator Valve

1 - N80- . Refer

– Check the Fuel

Injectors . Refer

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

161

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

• Upper limit of

lambda controller

output n.a.

• And
• Evap purge flow

at min. value

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

162

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

P2188

System

Too

Rich at

Idle

Bank 1

Fuel Sys‐

tem Di‐

rect Fuel

Injection

System

Too Rich

• Case 1:
• Adaptive value

<= -3.01 mg/

rev

• Case 2:
• Adaptive value

<= n.a. kg/h

• Barometric pres‐

sure > 73.0 kPa

• MAF > 60.0 mg/

rev

• Engine speed >

576 RPM

• ECT @ cylinder

head > 20° C

• IAT @ manifold >

-48° C

• AAT > -48° C
• Lambda set point

0.95 – 1.05 [-]

• Lambda control

closed loop

• Integrated MAF

>= 5.0 – 200.0 g

• Lambda adapta‐

tion active

• Vehicle speed < 4

mph

• Driver request

low dynamics

• And
• Mass fuel flow

lower range >

0.00 mg/rev

• Mass fuel flow

upper range <

0.00 – 17.74 mg/

rev

• Or
• 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

• 5.0 s
• Contin‐

uous

• 2

DCY

– Check the Evap‐

orative Emission

(EVAP) System

visually for con‐

tamination.

– 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

– Check the Fuel

Injectors . Refer

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

163

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

• Upper limit of

lambda controller

output n.a.

• And
• Evap purge flow

at min. value

P2195

O2 Sen‐

sor Sig‐

nal

Biased/

Stuck

Lean

Bank 1

Sensor

Oxygen

Sensors

Front Ra‐

tionality

Check

• Plausibility

check up‐

stream and

downstream

oxygen sensor

signal:

• Lambda value

> 1.15 [-]

• And
• O2S signal rear

>= 0.88 [V]

• O2S front ready
• O2S rear ready
• ECT @ cylinder

head >= -48° C

• MAF > 15.0; <

300.0 kg/h

• Catalyst purge

not active

• Integrated MAF

after end of cata‐

lyst purge 0 [-]

• Engine speed >

1,152 RPM

• EGT @ O2S front

> -273; < 800° C

• Integrated MAF >

40.0 g

• Dynamic lambda

controller output

< 3.0 %

• Dynamic MAF <

0.05 g/rev

• Dynamic engine

speed < 200 RPM

• And
• Second control

loop active:

• MAF 0.06 – 0.75

g/rev

• Engine speed

576 – 5,088 RPM

• 117.0 s
• Contin‐

uous

• 2

DCY

– Check the Oxy‐

gen Sensor 1

Before Catalytic

Converter -

GX10- . Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

164

Rep. Gr. ST - Generic Scan Tool

Content .. 120 121 122 123 ..