Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Turbocharger Control Valve

Courtesy of VOLVO CARS OF NORTH AMERICA.

If the turbocharger (TC) control valve circuit has a short-circuit to ground or an open-circuit the control module interprets it as a fault and ECM-6800 is stored.

Substitute Value 

Possible Source 

Signal too high: 

• short-circuit to supply voltage in the signal cable
• defective turbocharger (TC) control valve

Signal too low: 

• short-circuit to ground in the signal cable

Signal missing: 

• open-circuit in signal cable
• open-circuit in power cable
• defective turbocharger (TC) control valve

Fault symptom[s] 

• malfunction indicator lamp (MIL) lit