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Home >> Volvo >> 2013 >> XC90 Base, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 7 Of 13 >> ECM-8210: System Relay. Faulty Signal (B5254T2; 2005-2007) >> Diagnostic Trouble Code (DTC) Information ECM-8210
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Diagnostic Trouble Code (DTC) Information ECM-8210

Condition 

Fig 1: Identifying Main Relay
GLL101089Courtesy of VOLVO CARS CORPORATION

The engine control module (ECM) checks the power supply from the system relay.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the power supply from the engine control module (ECM) to the throttle unit is lower than 8 V.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value 

Possible Source 

Fault symptom[s]