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-918AINTERNAL FAULT. PERMANENT FAULT
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294T
Internal Fault. Permanent Fault
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294TSECTION Internal Fault. Permanent Fault
Internal fault. Permanent fault
Programming or replacing the engine control module (ECM)
- Ignition off.
The engine control module (ECM) has registered an internal fault. Replace the engine control module (ECM). See Engine control module (ECM), replacing Service and Repair.
Note! After replacing the engine control module (ECM), the throttle unit must be adapted using the vehicle communication input: "Throttle unit adaptation".
Remedy as necessary.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for this fault can be interrupted.
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Yes - Attempt New Test
No - Exit fault-tracing
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Attempt New Test - Programming or replacing the engine control module (ECM)
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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.