VOLVO
TCM-014B - Linear pressure solenoid SLB1. Signal too high
System
Transmission Control Module (TCM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS60 (2001–2009), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (9)
- Volvo S60 (2001–2009)2006–2007Engine B5254T4, D5244T4, D5244T5 only · Transmission TF-80SC, TF-80SC AWD only
- Volvo S60 (2001–2009)2008–2009Engine D5244T4, D5244T5 only · Transmission TF-80SC only
- Volvo V70 (2000–2008)2006–2007Engine B5254T4, D5244T4, D5244T5 only · Transmission TF-80SC, TF-80SC AWD only
- Volvo V70 (2000–2008)2008Engine D5244T5 only · Transmission TF-80SC only
- Volvo V70 XC / XC70 (2001–2007)2006–2007Engine D5244T4 only · Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2006–2007Engine D5244T4 only · Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2008–2010Engine D5244T4, D5244T5 only · Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2011Engine D5244T18, D5244T4, D5244T5 only · Transmission TF-80SC, TF-80SC AWD only
- Volvo XC90 (2003–)2012All engines except: B5254T2, B6324S5 · All transmissions except: AW50/51 AWD
What does this fault code mean?
Linear pressure solenoid SLB1 gives too high a signal, because the control module measures a current in the circuit that is above what is allowed. The solenoid cannot then be controlled correctly, and gear changes may slip, become harsh or fail to occur.
Possible causes
- Control signal wire short-circuited to supply voltage
- The linear pressure solenoid does not function
- Internal fault inside the TCM
What you can do
- 1Read and clear the fault code and road test the car
- 2Use a multimeter to check that the control signal wire to the SLB1 solenoid is not short-circuited to supply voltage
- 3If you have a diagnostic tool: see in live data whether the SLB1 solenoid value changes when gears are engaged
- 4Check the wiring from the gearbox for chafing and pinch damage
- 5If the fault remains, have a workshop check the solenoid and the control module
Symptoms you may notice5
- The general warning lamp is lit
- The malfunction indicator lamp is lit
- Gears slip abnormally
- Harsh gear changes
- Gear changes do not occur
What the fault can affect1
- An auxiliary program in the control module is activated
General guidance for car owners. Diagnosis on the car can point to a different cause.