2006 Legus GS300 P0200-P0206 Multiple Misfire Codes After Rain - Temporary Fix After 30-40 Minutes of Driving

Model: Legus GS300 Fault Code: P0200 Posted: 2012-12-15 04:17

Hi everyone! Sorry for my limited English. I'm experiencing multiple OBD-II diagnostic trouble codes on my 2006 Legus GS300: P0200, P0201, P0202, P0203, P0204, and P0205. These codes appear specifically after rainy weather. The engine runs roughly and exhibits misfires when the gas pedal is fully pressed. After driving for approximately 30 to 40 minutes, I can clear these codes using the vehicle's diagnostic system, which temporarily resolves the issue. However, once the engine is restarted, the malfunction indicator light returns, and the same symptoms reappear. I suspect a fuel injection or injector-related problem triggered by moisture exposure during rain. Any insights or solutions for this recurring P0200-P0206 issue would be greatly appreciated.