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 CHARTSCEM CODES (CENTRAL ELECTRONIC MODULE)CEM-8D01DIAGNOSTIC 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 CEM-8D01
Condition
For the diagnostic trouble code (DTC) to be stored, either the ignition switch lighting or the stop lamp must be activated. Diagnostic trouble code (DTC) CEM 8D01 is stored if the central electronic module (CEM) indicates a short-circuit to ground in the high level additional stop lamp or in the ignition ring lighting.
Possible source
- Over heated
- Short-circuit to ground in the circuit for the ignition switch or the stop lamp circuit
- Defective high level stop lamp.
Fault symptom[s]
- The stop lamp does not light when the brake pedal is depressed.
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.