Volkswagen Golf 1999 Service Manual page 685

Measured value (data) blocks
Evaluating display group 36, display zone 2 - Diagnosis of Oxygen Sensor (O2S)
after Three Way Catalytic Converter (TWC)
Appears on display
Oxygen Sensor (O2S)
after Three Way
Catalytic Converter
(TWC) not OK.: "B1 P2
n.OK.
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Possible cause
DTC stored in DTC
memory
Oxygen Sensor
(O2S) after Three
Way Catalytic
Converter (TWC)
faulty
Corrective action
- Check DTC memory
01-23 , DTC memory, checking
and erasing
- Perform a road test to remove
possible contaminates on
Oxygen Sensor (O2S) and repeat
check.
- Perform diagnosis again if result
is same:
- Check Oxygen Sensor (O2S)
and Oxygen Sensor (O2S)
control after Three Way Catalytic
Converter (TWC)
Página 49 de 86
01-230
Page
Page 24-140
12/2/2005