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Home >> Volvo >> 2001 >> S80 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 3 Of 11 >> ECM-223D: Rear Heated Oxygen Sensor (Ho2S), Bank 1. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) >> Signal too low >> Checking the components and wiring

Checking the components and wiring

Check the resistance of the heated oxygen sensor (HO2S) between terminals #1 and #2.

Check the signal cable between heated oxygen sensor (HO2S) terminal #2 and control module terminal #A6 (#A6). Check for a short-circuit to ground.

Remedy as necessary.

Other information 

Fig 1: Identifying Heated Oxygen Sensor
GLL104128Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
GLL100563Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Rear Heated Oxygen Sensor
GLL102934Courtesy of VOLVO CARS OF NORTH AMERICA.