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Home >> Chrysler >> 2004 >> Crossfire Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Electrical Diagnostics >> Diagnosis And Testing >> DTC P0172: Fuel System 1/1 Lean Control Below Limit (At Load) >> Diagnostic Test >> 3. O2 Sensor Operation

3. O2 Sensor Operation

Start the engine.

Allow the engine to reach normal operating temperature.

With the DRB III(R), read the O2 Sensor voltage.

Is the voltage switching between 0.4 and 0.6 volt? 

  1. Yes  >> Go to 4
  2. No  >> Go to 8 
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