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-0045DIAGNOSTIC TROUBLE CODE (DTC) INFORMATIONAW55-50/51SN / AW50/51 TRANSMISSION
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294T
AW55-50/51SN / AW50/51 Transmission
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294TSECTION AW55-50/51SN / AW50/51 Transmission
Diagnostic trouble code (DTC) information
Condition
The oil temperature sensor sends a signal to the transmission control module (TCM) which is used for functions such as temperature controlled lockup and initiating high-temperature programs. The sensor has an NTC (negative temperature coefficient) resistor. The signal (voltage) decreases with increasing oil temperature. Diagnostic trouble code (DTC) TCM-0045 is stored if the transmission control module (TCM) receives a signal from the oil temperature sensor which has not changed after the engine has run for 10 minutes.
Substitute value
- No substitute values.
Possible source
- Contact resistance in terminals.
- Open-circuit in signal cable or ground lead.
- Short-circuit to supply voltage in the signal cable.
- Defective oil temperature sensor.
Fault symptom[s]
- General orange warning lamp 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.