Diagnostic trouble code (DTC) information ECM-210A

Condition 

Fig 1: Identifying Front Heated Oxygen Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

The engine control module (ECM) checks the signals from the heated oxygen sensor (HO2S).

Diagnostic Trouble Code (DTC) ECM-210A is stored in the engine control module (ECM) if the engine control module (ECM) registers that the heated oxygen sensor (HO2S) has not activated or activates too slowly.

Diagnostic trouble code (DTC) ECM-210A can be diagnosed when the engine is running.

Substitute Value 

• None.

Possible Source 

• Contact resistance
• Defective heated oxygen sensor (HO2S).

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit.