Volkswagen Golf / Golf GTI / Jetta. Manual — part 189

24-18

19

-

Connector

Gold

plated
terminals

Black,

6-pin

For

Heated
Oxygen
Sensor
(HO2S)
-G39-
and
Oxygen
Sensor
(O2S)
Heater
-Z19-

Component

location:
Right on
underside
of vehicle

Fuel injection system, servicing

24-19

20 - Heated

Oxygen
Sensor
(HO2S) -
G39-*,
50 Nm

Component

location: In
front
exhaust
pipe

Remove

and
install
with
Oxygen
Sensor
(O2S)
ring
wrench
3337

Grease

only
threads
with G 052
112 A3 hot
bolt paste
(ant-seize
compound).
Grease
must not
get into
slots on
sensor
body

If seal

is
leaking,
remove
and
replace
seal.

Check

Oxygen
Sensor
(O2S)
heating

Fuel injection system, servicing

for
Heated
Oxygen
Sensor
(HO2S)

Page
24-38

Check

Oxygen
Sensor
(O2S)
and
Oxygen
Sensor
control
before
Three
Way
Catalytic
Converter
(TWC)

Page 24-
131

Check

aging
of
Heated
Oxygen
Sensor
(HO2S)

Page
24-150

When

replacing,
erase
learned
values
and
adapt
Motronic
Engine
Control
Module
(ECM) -
J220- to
Throttle
Valve
Control
Module -

Fuel injection system, servicing

J338-

Page 24-
182

Fuel injection system, servicing