VOLVO
ECM-6800 - Turbocharger (TC) control valve. Signal too high. Permanent fault
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
6 modelsC70 Cabriolet (1998–2005), S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (18)
- Volvo C70 Cabriolet (1998–2005)2003–2005
- Volvo S60 (2001–2009)2001All engines except: B5244S, B5244S2, D5244T
- Volvo S60 (2001–2009)2002Engine B5204T5, B5234T3, B5234T7, B5244T3 only
- Volvo S60 (2001–2009)2003Engine B5204T5, B5234T3, B5234T7, B5244T3, B5254T2 only
- Volvo S60 (2001–2009)2004Engine B5204T5, B5234T3, B5234T7, B5254T2, B5254T4 only
- Volvo S80 (1999–2006)1999Engine B5204T3, B5204T4, B6284T only
- Volvo S80 (1999–2006)2000All engines except: B5244S, B5244S2, B6294S, D5252T MSA 15.8
- Volvo S80 (1999–2006)2001Engine B5204T5, B5234T7, B5244T3, B6284T only
- Volvo S80 (1999–2006)2002Engine B5204T5, B5234T7, B5244T3, B6294T only
- Volvo S80 (1999–2006)2003Engine B5204T5, B5234T7, B5244T3, B5254T2, B6294T only
- Volvo S80 (1999–2006)2004Engine B5204T5, B5234T7, B5254T2, B6294T only
- Volvo V70 (2000–2008)2000All engines except: D5252T MSA 15.8
- Volvo V70 (2000–2008)2001–2002Engine B5204T5, B5234T3, B5234T7, B5244T3 only
- Volvo V70 (2000–2008)2003Engine B5204T5, B5234T3, B5234T7, B5244T3, B5254T2 only
- Volvo V70 (2000–2008)2004Engine B5204T5, B5234T3, B5234T7, B5254T2, B5254T4 only
- Volvo V70 XC / XC70 (2001–2007)2001–2002
- Volvo V70 XC / XC70 (2001–2007)2003–2004All engines except: D5244T
- Volvo XC90 (2003–)2003–2004All engines except: D5244T
What does this fault code mean?
The fault is permanent, which means it is present right now. The engine control module has found a fault in the circuit to the turbocharger control valve and stores the fault code. Although the code indicates a signal that is too high, the circuit may also be shorted to ground or have an open circuit.
Possible causes
- Signal wire shorted to supply voltage
- Defective turbocharger control valve
- Signal wire shorted to ground
- Open circuit in the signal wire
- Open circuit in the voltage supply wire
What you can do
- 1Check the wiring to the turbocharger control valve for chafing, loose connectors and damage
- 2Use a multimeter to check that the signal wire is not shorted to supply voltage or ground and has no open circuit
- 3Also check that the supply wire to the valve is intact
- 4Replace the turbocharger control valve if the wiring is in order but the fault remains
Symptoms you may notice1
- The malfunction indicator lamp is lit
General guidance for car owners. Diagnosis on the car can point to a different cause.