VOLVO
TCM-0045 - Oil temperature sensor. Faulty signal
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:
14 modelsC30 (2007–2013), C70 (2006–2013), C70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S40 (2004–2013), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V50 (2004–2013), V70 (1997–2000), V70 (2000–2008), V70 XC (1998–2000), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (37)
- Volvo C30 (2007–2013)2007–2013Transmission AW55-50/51SN only
- Volvo C70 (2006–2013)2006–2013Transmission AW55-50/51SN only
- Volvo C70 Cabriolet (1998–2005)1999Transmission AW50-42 only
- Volvo C70 Cabriolet (1998–2005)2000All transmissions except: M56
- Volvo C70 Cabriolet (1998–2005)2001–2005Transmission AW55-50/51SN only
- Volvo C70 Coupé (1998–2002)1999All engines except: B5254S DENSO · Transmission AW50-42 only
- Volvo C70 Coupé (1998–2002)2000All transmissions except: M56
- Volvo C70 Coupé (1998–2002)2001–2002Transmission AW55-50/51SN only
- Volvo S40 (2004–2013)2004, 2011–2012Transmission AW55-50/51SN only
- Volvo S40 (2004–2013)2005–2010Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo S60 (2001–2009)2001–2002
- Volvo S60 (2001–2009)2003, 2009All transmissions except: M58
- Volvo S60 (2001–2009)2004–2005Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo S60 (2001–2009)2006–2008All transmissions except: M58, M66 AWD
- Volvo S70 (1997–2000)1999Transmission AW42 AWD, AW50-42 only
- Volvo S70 (1997–2000)2000All transmissions except: M56, M58
- Volvo S80 (1999–2006)1999–2004
- Volvo S80 (1999–2006)2005–2006All transmissions except: M56
- Volvo V50 (2004–2013)2004, 2011–2012Transmission AW55-50/51SN only
- Volvo V50 (2004–2013)2005–2010Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo V70 (1997–2000)1999All engines except: B5202FS, B5252FS, D5252T MSA 15.7, GB5252S, GB5252S2 · Transmission AW42 AWD, AW50-42 only
- Volvo V70 (1997–2000)2000All transmissions except: M56, M58
- Volvo V70 (2000–2008)2000–2002, 2008
- Volvo V70 (2000–2008)2003All transmissions except: M58
- Volvo V70 (2000–2008)2004–2005Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo V70 (2000–2008)2006–2007All transmissions except: M58, M66 AWD
- Volvo V70 XC (1998–2000)1999Engine B5254T only · Transmission AW42 AWD only
- Volvo V70 XC (1998–2000)2000Transmission AW42 AWD only
- Volvo V70 XC / XC70 (2001–2007)2001–2002
- Volvo V70 XC / XC70 (2001–2007)2003–2005Transmission AW50/51 AWD only
- Volvo V70 XC / XC70 (2001–2007)2006–2007Transmission AW50/51 AWD, TF-80SC AWD only
- Volvo XC90 (2003–)2003, 2012, 2015
- Volvo XC90 (2003–)2004, 2006, 2011All transmissions except: M66 AWD
- Volvo XC90 (2003–)2005All transmissions except: M66 AWD, TF-80SC AWD
- Volvo XC90 (2003–)2007All transmissions except: M66 AWD, TF-80SC
- Volvo XC90 (2003–)2008–2010Transmission AW50/51 AWD, TF-80SC AWD only
- Volvo XC90 (2003–)2013–2014Transmission AW50/51 AWD only
What does this fault code mean?
The transmission control module receives a faulty signal from the oil temperature sensor, which is used for temperature-controlled lock-up and high-temperature programs. The cause may be a defective sensor or a fault in the connectors or wiring.
Possible causes
- Contact resistance in the connections
- Open circuit in the signal or ground wire
- The signal wire is short-circuited to supply voltage
- Defective oil temperature sensor
What you can do
- 1If you have a diagnostic tool: read the oil temperature after the car has been driven for a few minutes in drive, and compare it with the transmission temperature
- 2Switch the ignition off and have a workshop check the connectors for contact resistance and oxidation; if the temperature is reasonable, the connector was likely the cause
- 3Have a workshop check the signal wire to the sensor for an open circuit and for a short circuit to supply voltage and to other wires
- 4If the fault remains, have a workshop check the sensor and, if the fault is inside the transmission, replace the transmission
Symptoms you may notice1
- The general orange warning lamp is lit
What the fault can affect3
- The control module has no substitute values to use for the oil temperature
- Lock-up and slipping lock-up are blocked
- Neutral check is blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.