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The p2004 code means that the intake manifold runner is stuck open. I am trying to figure out how to correct this in my 03 Ford Ranger 2.3L right now without having to take the manifold off. No luck so far.
p1506 is an IAC (Idle Air Control) error code that comes on when your on-board computer senses an undesired Idle RPM.
Go to NAPA or AutoZone, they will tell you.
P0302 is cylinder number two misfire detected.
Random Misfire.
misfire # 1 cylinder
Code P0715 means:Input/Turbine Speed Sensor Circuit Malfunction
Shift Solenoid A Error
my 2006 galant is doing the same thing did you find out what was causing this?
Trouble code P0748 means: Pressure control solenoid electrical problem
Trouble code P0708 means:Transmission range sensor circuit high input
Trouble code P0325 means: Knock Sensor 1 Circuit Malfunction