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.
Diagnostic Trouble Code (DTC) Information
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION Diagnostic Trouble Code (DTC) Information
Diagnostic trouble code (DTC) information ECM-9918
Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) switches off the supply to the damper motor in the throttle unit, causing the throttle to turn to the return position using the return spring in the throttle unit.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute value
- The engine torque is limited using fuel shut-off. The maximum permitted engine torque depends on the position of the accelerator pedal (AP) and the return position of the throttle unit.
Possible source
- Other diagnostic trouble codes (DTCs) are stored, caused by the throttle unit being deactivated.
Fault symptom[s]
- General warning lamp lit
- Message in the display
- Poor performance
- Cruise control does not work at all
- Uneven idle.
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.