VOLVO
TCM-0001 - Shift solenoid S1. Signal too high
System
Transmission Control Module (TCM)
Volvo models this fault code applies to
Applies to the following models:
12 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 (1998–2000), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (30)
- 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 (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)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 V40 (1996–2004)2001–2004
- 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
- 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 (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)2003–2007Transmission 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 (TCM) has detected a signal that is too high on the wire for shift solenoid S1, at a time when the solenoid is meant to be off. The solenoid takes part in gear shifting, and depending on the gearbox design it is active in 1st and 4th gear or in 2nd and 3rd gear.
Possible causes
- The signal wire is short-circuited to supply voltage
- Internal fault in the control module
What you can do
- 1With a diagnostic tool, read the oil temperature in live data on a test drive; it should rise. A faulty oil temperature sensor can cause this code, so check it first
- 2Read and clear the fault code, then road test the car to see whether it returns
- 3If you have a diagnostic tool: activate solenoid S1 with the selector in position P and read the current in live data; if it fluctuates, this points to a contact problem
- 4Have a workshop measure the signal wire to solenoid S1 against supply voltage and ground at the transmission connector
- 5If no fault is found in the wiring, have a workshop check solenoid S1 and the control module, and reset the transmission adaptation and oil quality counter after the repair
Symptoms you may notice5
- The general orange warning lamp is lit
- The malfunction indicator lamp (MIL) is lit
- Gear shifts are harsh
- Gear shifts do not occur
- The lock-up function does not work
What the fault can affect2
- The control module's emergency program (Limp-home) is activated
- The Emergency mode I program in the transmission control module is activated
General guidance for car owners. Diagnosis on the car can point to a different cause.