Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLVO2004S80 L6-2.9L TURBO VIN 91 B6294TREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSTCM CODES (TRANSMISSION CONTROL MODULE)TCM-0015DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294T
Diagnostic Trouble Code (DTC) Information
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294TSECTION Diagnostic Trouble Code (DTC) Information
Diagnostic trouble code (DTC) information
Condition
Lock-up solenoid SL controls the transmission lock-up function. Solenoid SL operates when it receives voltage from the transmission control module (TCM) and is activated under different driving conditions depending on road speed, throttle position and the driving mode selected. The control module checks if lock-up solenoid SL is stuck in open or closed position by comparing the signals from solenoid SL and lock-up pressure sensor PS4. Pressure sensor PS4 detects whether solenoid SL is activated or not. Diagnostic trouble code (DTC) TCM-0015 is stored if the signals do not correspond with each other for 10 seconds.
Substitute value
- The control module does not activate the lock-up solenoid.
Possible source
- Lock-up solenoid SL has stuck in open or shut position.
- Defective solenoid SL.
Fault symptom[s]
- Automatic transmission warning lamp flashes.
- No lock-up function.
- Malfunction indicator lamp (MIL) lit.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.