Noises

Hiss or whoosh under acceleration

Air escaping somewhere on the pressurised side of a turbo engine when you accelerate.

What it usually is, by vehicle

Diagnostics & Repair

The sample guide

Nomicore Editorial Team · Sep 28, 2026

Covered makes

Honda

Codes that go with it

P0299Turbocharger/Supercharger Underboost Condition

Other noises

Clunk pulling away or stopping Deep knock that rises with rpm Puffing or chuffing from the top of the engine Rattle from the turbo Rattle on cold start Tick at idle Whine from the front of the engine Whistle from the engine bay at idle

Ask eManuals about your car

Answers come from the actual factory manual for your make, model and year, with the page cited. Join the waitlist and we will email you when a spot opens up.

Invite-only beta. No spam, one email when your spot opens.