After work intended to address a rattle from the cabin blower, repeat the original conditions in a safe place and check whether the symptom returns. Note fan speed and whether the sound stops when the fan is off. Record the result before clearing codes or resetting adaptations.
Follow the maker’s procedure for drive cycles and readiness monitors. Check the cabin filter and visible intake area with the car off; leaves can collect near the blower. If the issue remains, return to the evidence instead of swapping another part.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.