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.
2003 Volvo S40FACTORY OEM SERVICE PROCEDURE
Checking the response code
- Ignition on.
- Activate the Scan Tool (ST) in MODE 2.
- Move the ON/OFF switch to the ON position.
- Activate the SET switch.
- Check that the SET-function is OK by checking that response code 2-1-3 is returned.
Is response code 2-1-3 returned?
- Yes, response code 2-1-3 is returned. Troubleshooting has been completed.
- No, response code 2-1-3 is not returned. Refer to Checking other response codes .
- No, response code 3-1-1 is returned instead. Refer to Checking response code 3-1-1 .
Factory Service Tools
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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.
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