SRS system reduces injury risk during certain collisions with front seat belts. System includes seat belt switches and dual stage front air bag modules. Only one air bag deploys depending on collision severity and occupant status
P0089 indicates fuel pressure regulator performance issues. PCM sets code when desired and actual fuel pressures don't match. Fuel pressure regulator maintains pressure drop at injector tips
ECU is a computer-like component that manages vehicle's electronic systems. Located in engine compartment near firewall for protection. Acts as vehicle's brain, monitoring and controlling various functions
Error codes can be displayed in two-digit or five-digit format. Two-digit codes are for self-diagnosis, five-digit for computer testing. Reset interval by pressing buttons A and B during ignition
OBD-II port is located under dashboard near driver's side. All Volkswagen vehicles from 1996 onwards have OBD-II port. Port provides access to vehicle's computer system for diagnostics
EVAP system collects and burns off fuel vapors safely. System includes charcoal canister and purge valve/solenoid. Fuel is flammable and leaks can create car fires