VOLVO
TCM-002F - Lock-up function. Slipping or not engaged
System
Transmission Control Module (TCM)
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:
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 control module compares the signal from the gearbox speed sensor with gearbox rpm and with engine rpm to see whether lock-up is slipping or not engaged. If the signals do not match the expected values, lock-up is slipping or not engaged, and the fault code is set.
Possible causes
- Poor quality transmission fluid
- Water in the oil
- Contact resistance in the connections
- Lock-up solenoid SLU has stuck in the OFF position
- Mechanical fault in the transmission
What you can do
- 1Have a workshop check the transmission fluid level and quality, including whether there is water or metal particles in the oil
- 2Check the connectors on the transmission and the control module for contact resistance and oxidation, and reconnect them firmly
- 3Test drive the car and pay close attention to lock-up; if gear changes and lock-up work without problems, poor contact may have been the cause
- 4If the fault remains, have a workshop measure solenoid SLU against ground and supply voltage, and check the cooling system pipes and connections to the transmission for leaks
Symptoms you may notice5
- The general orange warning lamp is lit
- The malfunction indicator lamp (MIL) is lit
- No lock-up function
- Gear shifts are harsh
- The automatic transmission warning light blinks
What the fault can affect1
- The Emergency mode I program in the control module is activated
General guidance for car owners. Diagnosis on the car can point to a different cause.