Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 316
DME 7.8 DME 7.8 0 · 0-30P0153
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DME 7.8 DME 7.8 0
0-30P0153
18 Oxygen Sensor Ahead of TWC, Bank 2 – Below
Limit
Diagnosis conditions
• Vehicle at operating temperature, after this 3 minutes idle
speed, then approx. 30 seconds increased idle speed.
Possible fault cause
♦Oxygen sensor is dynamically inert
Affected terminals
-
Diagnosis/Troubleshooting
Note!
Do not use contact spray on the connectors to oxygen sensors.
Work instruction Display OK If not OK
1 Check exhaust system for Repair exhaust sys-
leaks tem
→ End
2 Replace oxygen sensor
Note!
Do not exchange oxygen sensors ahead of catalytic converter and
after catalytic converter.
2469 P0153 0-30 page 1
Printed in Germany – 2, 2000 p0153
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