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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control System >> DTC P0037, P0038, P0057, P0058: Ho2S2 Heater >> DTC Confirmation Procedure >> With GST

With GST

  1. Start the engine and warm it up to the normal operating temperature.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute.
  4. Let engine idle for 1 minute.
  5. Turn ignition switch OFF and wait at least 10 seconds.
  6. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute.
  7. Let engine idle for 1 minute.
  8. Select "MODE 3" with GST.
  9. If DTC is detected, go to DIAGNOSTIC PROCEDURE  .