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Home >> Porsche >> 2004 >> Boxster Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DME 7.8 Diagnosis >> DTC P0154: O2 Sensor Circuit No Activity Detected >> Diagnosis/troubleshooting - all naturally-aspirated models

Diagnosis/troubleshooting - all naturally-aspirated models

NOTE:
  • The DTC covers electrical open circuits here.

Diagnostic conditions 

Possible cause of fault 

Affected terminals 

DME control module connector II, pin 10 and oxygen sensor jack, bank 2, pin 3

DME control module connector II, pin 16 and oxygen sensor jack, bank 2, pin 4

Diagnosis/troubleshooting 

NOTE:
  • Do not use contact spray on the oxygen sensor plug connections as this may cause irreparable damage to the wiring (contamination of the oxygen sensor via the reference air channel).
Fig 1: P0154 Work Instruction (All Naturally-Aspirated Models, Step 1)
G02530302Courtesy of PORSCHE OF NORTH AMERICA, INC.
Fig 2: P0154 Oscilloscope Pattern
G02530303Courtesy of PORSCHE OF NORTH AMERICA, INC.
Fig 3: P0154 Work Instruction (All Naturally-Aspirated Models, Step 2 & 3)
G02530304Courtesy of PORSCHE OF NORTH AMERICA, INC.
Fig 4: P0154 Work Instruction (All Naturally-Aspirated Models, Step 4 Through 9)
G02530305Courtesy of PORSCHE OF NORTH AMERICA, INC.
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