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Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

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Measured value (data) blocks<br />

Página 46 de 86<br />

01-227<br />

Evaluation of display group 34, display zone 4 - Oxygen Sensor (O2S) diagnosis -<br />

Oxygen Sensor (O2S) aging before Three Way Catalytic Converter (TWC)<br />

Appears on display Possible cause Corrective action<br />

Oxygen Sensor (O2S)<br />

before Three Way<br />

Catalytic Converter<br />

(TWC) not OK.: "B1 P1<br />

n.OK.<br />

DTC stored in DTC<br />

memory<br />

- Check DTC memory Page<br />

01-23 , DTC memory, checking<br />

and erasing<br />

Oxygen Sensor<br />

(O2S) faulty before<br />

Three Way Catalytic<br />

Converter (TWC)<br />

- Perform a road test to remove<br />

possible residue on Oxygen<br />

Sensor (O2S) and repeat<br />

check.<br />

- Perform diagnosis again if<br />

result is same:<br />

- Check Oxygen Sensor (O2S)<br />

and Oxygen Sensor (O2S)<br />

control before Three Way<br />

Catalytic Converter (TWC)<br />

Page 24-131<br />

http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...<br />

12/2/<strong>2005</strong>

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