VOLVO
TCM-0110 - Lock-up solenoid SLU. Signal too low. Intermittent fault
System
Transmission Control Module (TCM)
Volvo models this fault code applies to
Applies to the following models:
11 modelsC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S40 (1996–2004), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V40 (1996–2004), V70 (1997–2000), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (21)
- Volvo C70 Cabriolet (1998–2005)2000–2005Transmission AW55-50/51SN only
- Volvo C70 Coupé (1998–2002)2000–2002Transmission AW55-50/51SN only
- Volvo S40 (1996–2004)2001–2004
- Volvo S60 (2001–2009)2001–2002
- Volvo S60 (2001–2009)2003All transmissions except: M58
- Volvo S60 (2001–2009)2004–2009Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo S70 (1997–2000)2000Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo S80 (1999–2006)1999–2000Transmission AW55-50/51SN only
- Volvo S80 (1999–2006)2001–2006Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo V40 (1996–2004)2001–2004
- Volvo V70 (1997–2000)2000Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo V70 (2000–2008)2000–2002
- Volvo V70 (2000–2008)2003All transmissions except: M58
- Volvo V70 (2000–2008)2004–2007Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo V70 (2000–2008)2008Transmission AW55-50/51SN only
- Volvo V70 XC / XC70 (2001–2007)2001–2002
- Volvo V70 XC / XC70 (2001–2007)2003–2007Transmission AW50/51 AWD only
- Volvo XC90 (2003–)2003All transmissions except: 4T65 AWD
- Volvo XC90 (2003–)2004–2007Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo XC90 (2003–)2008–2014Transmission AW50/51 AWD only
- Volvo XC90 (2003–)2015
What does this fault code mean?
The lock-up solenoid SLU has been registered with an intermittent fault: at some point the control module saw the signal wire short-circuited to ground when the solenoid should have been active. The fault does not have to be present now. The solenoid probably cannot be activated then, which affects the lock-up function and certain gear changes.
Possible causes
- Signal wire short-circuited to ground
- Defective control module
- Defective solenoid
What you can do
- 1Read and clear the fault code, road test and see whether it returns
- 2Use a multimeter to check that the wire to the lock-up solenoid has no contact with ground (the body)
- 3If you have a diagnostic tool: check in live data whether the lock-up solenoid activates while driving and compare with when lock-up should engage
- 4Check that the cable from the gearbox is not chafed or pinched
- 5If the fault returns, have a workshop check the control module and the gearbox connectors for contact resistance and oxidation
Symptoms you may notice5
- The orange general warning lamp is lit
- Gear changes do not occur or are irregular
- The lock-up function does not work
- The automatic transmission warning lamp flashes
- The malfunction indicator lamp is lit
What the fault can affect2
- The control module emergency program Emergency mode I is activated
- The control module does not activate the lock-up solenoid
General guidance for car owners. Diagnosis on the car can point to a different cause.