Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Engine Control Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

The engine control module (ECM) has an internal fault in the knock sensor (KS) IC circuit.

Substitute Value 

• knock control disabled
• ignition retarded for safety reasons.

Possible Source 

Faulty signal: 

• electrical fault in the IC circuit.

Fault symptom[s] 

None.