Signal Too Low. Permanent Fault: Verification: Verification

HINT: After carrying out the repair, check that the fault has been remedied. 

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS CORPORATION

Fig 2: Connecting Connector

Courtesy of VOLVO CARS CORPORATION

• Ignition off.
• Reconnect connectors, reinstall components.
• Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .
  NOTE:

  After test driving the engine should not be turned off. The test drive must be carried out again.

  Connect VIDA (Volvo scan tool) again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status.

  The value should be higher than 1.0.

  Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS CORPORATION
  Fig 4: Identifying Front Heated Oxygen Sensor (HO2S)

  Courtesy of VOLVO CARS CORPORATION

Is the value higher than 1.0? 

• YES 

  VERIFIED:  Troubleshooting has been completed.

• NO 

  Refer to INFORMATION