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-0098
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294T
TCM-0098
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294TSECTION TCM-0098
Faulty software
Ordering software and programming the control module
The software in the control module requires updating with new software.
Order software according to the table below.
Programming can be carried out when the software has been delivered.
Program the control module according to the table below.
Continue - Test driving and reading off diagnostic trouble codes (DTCs)
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Test driving and reading off diagnostic trouble codes (DTCs)
Hint: To check that the fault is remedied, test drive the car and then read off the diagnostic trouble codes (DTCs).
- Ignition on
- Read off diagnostic trouble codes (DTCs).
Other information
- For the test driving schedule, Test Drive Form, Description.
Does diagnostic trouble code (DTC) TCM-0097 or TCM-0098 recur?
Yes - Replacing the transmission control module (TCM)
No - FAULT FOUND
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Replacing the transmission control module (TCM)
Replace the transmission control module (TCM). See Transmission control module (TCM), replacing, B5254T2, AW50/51 AWD, B5254T2, AW55-50/51SN Service and Repair.
Continue - DONE
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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.