VOLVO
TCM-0093 - Gear selector lever control module communication. Signal too high
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:
4 modelsS80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (13)
- Volvo S80 (1999–2006)1999–2004
- Volvo S80 (1999–2006)2005–2006All transmissions except: M56
- 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–)2003, 2015
- Volvo XC90 (2003–)2004All transmissions except: M66 AWD
- Volvo XC90 (2003–)2005–2006All transmissions except: M66 AWD, TF-80SC AWD
- Volvo XC90 (2003–)2007Transmission AW50/51 AWD, AW55-50/51SN only
- Volvo XC90 (2003–)2008–2014Transmission AW50/51 AWD only
What does this fault code mean?
The transmission control module receives a signal from the gear selector module (GSM) over the communication line. The fault means the signal from the gear selector module is too high.
Possible causes
- Contact resistance in the connections
- The communication line is shorted to voltage
What you can do
- 1Read off the fault code, clear it and check whether it comes back
- 2Check that the connectors between the transmission control module and the gear selector module are secure and free from oxidation
- 3Press the brake, move the selector through the positions and check that the gear shows both in the instrument panel and on the selector panel
- 4Have a workshop check the gear selector module and the communication line; if the fault remains, one of them may need replacing
Symptoms you may notice4
- Malfunction indicator lamp (MIL) on
- General orange warning lamp on
- No gear position shown on the gear selector panel
- General warning lamp on
General guidance for car owners. Diagnosis on the car can point to a different cause.