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P0734 OBD-II Trouble Code: Gear 4 Incorrect Ratio
P0734 code means there has been an abnormality detected in one of the automatic transmission gears often due too a faulty PCM, ECM, TCM or blockage.

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I have a 2009 VW Jetta S 2.5L. Why does my car turns on but then it turns off after driving it for a bit/while?
These are the following definitions for the codes you've received: P0864 - Transmission control module (TCM) communication circuit -range/performance problem P0070 - Ambient Air Temperature Sensor - (possibly shorted but most likely not related) P0734 - Gear 4 Incorrect...

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