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.
Catalytic Converter Codes
2004 Acura 3.5RLSECTION Catalytic Converter Codes
WARNING: This page is about a different car, the 2003 Acura RSX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Do not turn ignition switch off.
- When negative battery cable is disconnected, all readiness codes are cleared.
- When ECM/PCM is cleared with scan tool, all readiness codes are cleared.
Ensure ambient temperature is 20-95°F (-7-35°C).
- Connect scan tool to DLC. Start engine and hold at 3000 RPM with no load until radiator fan comes on.
- Drive vehicle for about 10 minutes, without stopping, on a highway. Speed can vary.
- With A/T in "D" position, M/T in 5th gear, drive at steady speed between 50 and 62 MPH for 30 seconds.
- Repeat step 4 three times. Between each repetition, close throttle completely for 1-2 seconds. If engine is stopped during this part of procedure, go to step 2 and start again.
- Using scan tool, check readiness codes.
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.