Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 1135
DME 7.8 DME 7.8 0 · 0-201.10P2099
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DME 7.8 DME 7.8 0
0-201.10P2099
Signal Delay Time for Oxygen Sensor Ageing, Bank 2
Below Limit
Diagnosis conditions
• Oxygen sensing after TWC is active
• No secondary air
• No diagnosis of secondary air system
• EVAP canister not highly loaded
• No faults in memory
Possible fault cause
♦Oxygen sensor
Affected terminals
-
Diagnosis/Troubleshooting
Note!
Do not use contact spray on the connectors to oxygen sensor.
Work instruction Display OK If not OK
1 Read out regulator delay more than 1.2 sec- Replace oxygen
after TWC, bank 2, using onds sensor
PST 2 or a scan tool
Note!
Do not confuse oxygen sensor ahead of catalytic converter and oxy-
gen sensor after catalytic converter.
2469 P2099 0-201.10 page 1
Printed in Germany – 7, 2002 p2099
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