Category: P0400 à P0499

Learn about P0497 code: low purge flow in your EVAP system. Discover causes, symptoms, and repair solutions for this emission control issue affecting all veh…

Learn about the P0498 code: low voltage in your EVAP purge valve circuit. Understand causes, symptoms, and fixes for evaporative emission system issues.

Learn about P0499 code: high value in evaporative emission system vent valve control circuit. Generic OBD-II code affecting all vehicles 1996+.

Troubleshooting P049A code for Exhaust Gas Recirculation flow issues in valve position B.

Troubleshoot P049B code for insufficient EGR B flow. Learn causes, symptoms, and fixes for reduced exhaust gas recirculation affecting engine performance and…

Learn about error code P049C: excessive EGR system B flow detection. Understand causes, symptoms, and repair solutions for Dodge, Ford, Toyota…

Learn about the P049D EGR A control position exceeded learning limit code, its causes, and repair steps for OBD-II vehicles like Dodge, Chevy, and Honda.

Learn about the P049E code: EGR B control position exceeded learning limit. Understand causes, symptoms, and fixes for this powertrain issue in OBD-II vehicles.

Learn about the exhaust pressure control valve B, its role in diesel engine performance, cold starts, and towing efficiency for Ford, Dodge, Mercedes, Nissan…

Learn about P04A0 code: Exhaust Pressure Regulator Valve B range/performance issues in diesel engines.