Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 681
DME 7.8 DME 7.8 0 · 0-103P1110
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DME 7.8 DME 7.8 0
0-103P1110
294 Oxygen Sensors Exchanged Ahead of TWC
Diagnosis conditions
• Engine at operating temperature
• Oxygen sensing system active
Possible fault cause
♦Wiring harness
Affected terminals
II/15 and II/16
Diagnosis/Troubleshooting
Note!
When the oxygen sensors are exchanged, then the oxygen sensors run contrary to the adaptation limitation.
Work instruction Display OK If not OK
1 Check wiring harness ♦Measure resistance between 0 - 5 Ω Repair wiring har-
oxygen sensor connector 1 pin ness
1 and DME control module con-
nector pin II/15
2 ♦Measure resistance between 0 - 5 Ω Repair wiring har-
oxygen sensor connector 2 pin ness
1 and DME control module con-
nector pin II/16
P1110 0-103 page 1
Printed in Germany – 2, 2000 p1110
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