VOLVO
TCM-014C - Linear pressure solenoid SLB1. Faulty signal
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?
Solenoid SLB1 gives a faulty signal: the control module has registered a current reading in the solenoid circuit that does not match what is expected. The solenoid then cannot regulate the system pressure, which can cause harsh, missed or slipping gear changes.
Possible causes
- Contact resistance in the connectors
- Open circuit in the control signal or signal ground wire
- Linear pressure solenoid SLB1 jammed
- Linear pressure solenoid SLB1 does not function
What you can do
- 1Clear the fault code and road test to see whether it returns
- 2If you have a diagnostic tool: read the SLB1 solenoid value in live data and see whether it changes when gears are engaged
- 3If the value does not change, the fault remains, and a workshop should check whether the solenoid is stuck
- 4Check that the wiring from the gearbox is not chafed or pinched
- 5Have a workshop check the connectors to the control module for contact resistance and oxidation
Symptoms you may notice5
- The general warning lamp is lit
- The malfunction indicator lamp is lit
- Harsh gear changes
- Gear changes do not occur
- Gears slip abnormally
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.