Tag
#leak
3 posts in Car Diagnostics blog about "leak" — OBD-II diagnostics, DTC codes, repair. ← All posts
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Exhaust smell inside the cabin: treat it as urgent
Exhaust gas contains carbon monoxide, which is colourless, odourless and disabling. Smelling exhaust in the cabin means something is letting it in.
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How the EVAP monitor tests for leaks, and why it needs half a tank
The fussiest test on the car. Knowing its conditions is the difference between a week of aimless driving and a readiness status that completes.
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P0455: EVAP large leak — 10 reasons why "just the gas cap" isn't always right
Deep dive into P0455: how OBD-II detects a large leak, difference from P0442/P0456, EVAP smoke test, why gas cap first, what to do with the charcoal canister.