Diagnostic Trouble Code (DTC) Information ECM-2450

Condition 

Fig 1: Front Heated Oxygen Sensor

Courtesy of VOLVO CARS CORPORATION

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers an internal fault in the control for the heated oxygen sensors (HO2S).

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

Substitute Value 

• None.

Possible Source 

• Damaged engine control module (ECM).

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit.