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-201ADIAGNOSTIC 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 ECM-201A
Condition
During the engine warm up phase the way the engine temperature should increase is calculated. Factors such as engine load and the start temperature are taken into account. This test takes place during the engine warm-up phase (under "normal operation") and continues until the engine temperature has reached 84 °C. For the test to start, the starting temperature of the engine must be below 35 °C, the outside temperature must be between -7 and +35 °C and at least 15 minutes must have passed since the engine was last run.
The diagnostic trouble code (DTC) is stored if the calculated increase in temperature does not correspond to the actual increase (measured by the engine coolant temperature (ECT) sensor).
Hint: This diagnostic trouble code (DTC) can also be caused by faults that store diagnostic trouble codes (DTCs) for outside temperature sensors.
Substitute value
- None.
Possible source
- Damaged engine coolant temperature (ECT) sensor
- Damaged 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.