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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) Diagnostic Trouble Codes - 5 Of 11 >> ECM-2A2A: Rear Heated Oxygen Sensor (Ho2S) Preheating. Signal Too Low. Intermittent Fault (B6284T; 1999-2001) >> Signal too low. Intermittent fault >> Checking cables

Checking cables

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information 

Fig 1: Identifying Heated Oxygen Sensor
GLL104128Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Rear Heated Oxygen Sensor
GLL102934Courtesy of VOLVO CARS OF NORTH AMERICA.