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Home >> Jaguar >> 1998 >> XK8 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System >> Diagnosis & Testing >> Pinpoint Test D: P0140 >> D3: Check For O2 Sensor Failure
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D3: Check For O2 Sensor Failure

  1. Run the engine for a period to warm the sensor and then maintain a steady speed of approximately 2500 rpm.
  2. Measure the voltage between EM022/001 and EM022/002
    Fig 1: Measuring Voltage Between EM022/001 And EM022/002
    G04355481Courtesy of JAGUAR CARS, INC.
    • Is the voltage between 600mV and 1.0 Volt? 

    Yes  : GO to D4 

    No  : Renew O2 sensor; reconnect plug(s)

    GO to D7