What does P0909 Mean? Regarding the P0909 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. When you see P0909 engine fault code on your engine code reader this description will help you. engine code P0909P0909 fixobd P0909dtc P0909obd code P0909obd2 P0909P0909 car codediagnostic code P0909car code P0909check engine code P0909fehlercode P0909P0909 fiatcodigo P0909codigo falla P0909P0909 kody b??dówcodigo de falla P0909 What are the common causes of P0909 ? Faulty Gate Select Position Actuator Gate Select Position Actuator harness is open or shorted Gate Select Position Actuator circuit poor electrical connection How do you troubleshoot P0909 ? Now, clear the codes and test-drive the vehicle to see if the code is reset. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. Searches related to P0909 Code - Gate Select Control Error P0909 P0908