VOLVO
TCM-000C - Shift solenoid S2. Hydraulic fault
System
Transmission Control Module (TCM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 XC (1998–2000), XC90 (2003–)
Show models by year and engine (12)
- Volvo C70 Cabriolet (1998–2005)1999–2000Transmission AW50-42 only
- Volvo C70 Coupé (1998–2002)1999All engines except: B5254S DENSO · Transmission AW50-42 only
- Volvo C70 Coupé (1998–2002)2000Transmission AW50-42 only
- Volvo S70 (1997–2000)1999–2000Transmission AW42 AWD, AW50-42 only
- Volvo S80 (1999–2006)1999–2000All transmissions except: AW55-50/51SN
- Volvo S80 (1999–2006)2001All transmissions except: AW50/51 AWD, AW55-50/51SN
- Volvo S80 (1999–2006)2002–2006Transmission 4T65EV, 4T65EV-GT 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)2000Transmission AW42 AWD, AW50-42 only
- Volvo V70 XC (1998–2000)1999Engine B5254T only · Transmission AW42 AWD only
- Volvo V70 XC (1998–2000)2000Transmission AW42 AWD only
- Volvo XC90 (2003–)2003–2006Transmission 4T65 AWD only
What does this fault code mean?
The control module has found that the vehicle and engine speed signals do not match the expected values, and that a wrong gear is engaged compared with the calculated one. This points to a solenoid fault in the hydraulic circuit for gears 1–2 or 3–4, which includes solenoid S2.
Possible causes
- Glycol in the transmission fluid
- Solenoid S2's hydraulic valve is jammed, either open or closed
- The solenoid binds or is stuck, giving a defective control system
- Internal leakage in the transmission
- Worn or damaged clutch plates in the transmission
- Mechanically defective solenoid
What you can do
- 1If other fault codes are stored, deal with them once this fault-tracing is complete
- 2Have a workshop check whether the transmission control module needs new software and download it if needed; old software in the engine control module can also cause the fault
- 3Clear the fault code and road test the car to see whether it returns
- 4Have a workshop check whether coolant has leaked into the transmission fluid, since glycol in the oil is a possible cause
- 5If the fault remains, have a workshop check the solenoids and valves in the transmission; a mechanical fault in the transmission means the transmission must be replaced
Symptoms you may notice5
- The general orange warning lamp is lit
- The malfunction indicator lamp (MIL) is lit
- No gear shifts
- Gear shifts are harsh
- No lock-up function
What the fault can affect2
- Only gears 3 and R can be selected in limp-home mode
- Once the ignition has been switched off, the control module returns to normal operation and all four forward gears can be used again
General guidance for car owners. Diagnosis on the car can point to a different cause.