Diagnostic Trouble Code (DTC) Information ECM-612C

Condition 

Fig 1: Identifying Camshaft Position Control

Courtesy of VOLVO CARS OF NORTH AMERICA.

The engine control module (ECM) checks the signal cable for the reset valve for the intake camshaft.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal from the signal cable for the reset valve is too high.

The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.

Substitute Value 

• None.

Possible Source 

• Short-circuit to supply voltage in the signal cable
• Open-circuit in the power supply
• Damaged camshaft reset valve.

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit.