3 posts in Car Diagnostics blog about "exhaust" — OBD-II diagnostics, DTC codes, repair. ← All posts
Removing a catalyst or particulate filter changes more than the noise. The consequences for sensors, codes, and the annual test.
A metallic rattle at particular revs usually costs almost nothing to fix. How to tell a heat shield from a blown silencer, and why not to run it on.
How to detect catalytic converter theft via OBD-II: P0420/P0430 after theft, misfires, exhaust noise — plus practical prevention, marking, and insurance advice.