codes p0734, p0733

Asked by Dec 03, 2013 at 12:43 PM about the 2002 Kia Rio Base

Question type: Maintenance & Repair

will not shift into high gear

2 Answers


P0733 - Gear 3 Incorrect ratio, P0734 - Gear 4 Incorrect ratio.... Possible causes - Low transmission fluid level - Dirty transmission fluid - Shift solenoids - Transmission mechanical problems - Transmission hydraulic control circuit

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Thanks for the areas to check out. sorry for the delay, I've been gone. I've already done the fluid drain and change, shifts into 3rd but still no overdrive. I was going measure the control signals from the TCU and ECU..Is there a way to test the solenoids? Visual check? I was told the car will not shift into high gear until the engine temp reaches normal op temp. Could it be a faulty thermostat circuit? Thanks for responding and any information that could help me or better yet, keep me from doing something stupid. I'm a Chevy man, this is my first Kia. I really like it.

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