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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-2B2A: Rear Lambda Probe Pre-Heating, Bank 2. Signal Too High. Intermittent Fault. (B6284T; 1999-2001) >> Signal too high. Intermittent fault >> Checking cables

Checking cables

Check signal cable between heated oxygen sensor (HO2S)) #2 and control module #A36 (#A36) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information 

Fig 1: Identifying Rear Heated Oxygen Sensor (HO2S) Connector
GLL104129Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Voltage Display
GLL101041Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Rear Heated Oxygen Sensor (HO2S)
GLL102933Courtesy of VOLVO CARS OF NORTH AMERICA.