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 CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-2000DIAGNOSTIC 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
If the control module receives a signal from the engine temperature sensor corresponding to a temperature lower than -47°C (-52.6°F) or higher than +143°C (289.4°F) the control module interprets it as a fault and ECM-2000 is stored. As soon as the engine is started the temperature is calculated theoretically. If the calculated temperature exceeds the engine coolant temperature (ECT) sensor signal, the control module interprets as a fault and ECM-2000 is stored.
Substitute value
- engine coolant temperature (ECT) is calculated using a model. Three-way catalytic converter (TWC) heating and fuel trim at start (starting trim), idle diagnostic and misfire diagnostic is disabled.
- engine cooling fan (FC) runs at low-speed
Possible source
Signal too high:
- short-circuit to ground in the signal cable
- defective temperature sensor
Signal too low:
- open-circuit in the signal cable
- short-circuit to supply voltage in the signal cable
- defective temperature sensor
- contact resistance in terminals
Faulty signal:
- defective temperature sensor
- faulty engine coolant thermostat
Fault symptom[s]
- 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.