Exhaust noise during acceleration
A Honda CR-V 2020 producing unusual noise from the exhaust during acceleration likely indicates an exhaust leak, loose component, or a failing catalytic converter. The noise is typically a hissing, rattling, or roaring sound that increases with engine load.
Diagnosis Details
Possible Causes
Exhaust system leak (cracked pipe, loose clamp, or gasket failure)
Catalytic converter internal failure or clogging
Heat shield loose or rusted, rattling against exhaust components
Muffler internal baffle failure or corrosion
Related OBD-II Codes
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What You Should Do
Inspect the exhaust system for visible damage, rust, or loose parts.
Check for exhaust leaks by feeling for air pulses or listening for hissing.
If the noise is metallic or rattling, check heat shields and catalytic converter.
A professional exhaust system inspection is recommended to pinpoint the source.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
