FixVault

F4: 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 EM023/003 and EM023/004.
    Fig 1: Measuring Voltage Between EM023/003 And EM023/004
    G04355512Courtesy of JAGUAR CARS, INC.
    • Is the voltage between 600mV and 1.0 Volt? 

    Yes  : GO to F5 

    No  : Renew O2 sensor, reconnect plug(s)

    GO to F8