What does P0734 Mean? Utilizing the position of the throttle, engine load and speed, as well as vehicle speed, the vehicle computer determines the appropriate gear to shift into to maintain the desired speed and power in an automatic transmission. The P0734 trouble code develops when there is a problem shifting into fourth gear specifically. The vehicle's Engine Control Module (ECM), Transmission Control Module (TCM), or PCM, depending on the vehicle make and model, uses information from the transmission speed sensor, calculated against engine speed, to determine the proper gear ratio. And when this data does not match up, a P0734 trouble code is stored. engine code P0734P0734 fixobd P0734dtc P0734obd code P0734obd2 P0734P0734 car codediagnostic code P0734car code P0734check engine code P0734fehlercode P0734P0734 fiatcodigo P0734codigo falla P0734P0734 kody b??dówcodigo de falla P0734 What are the common causes of P0734 ? Common causes include faulty shift solenoids, hydraulic blockages inside the internal transmission fluid passages, mechanical internal transmission failures, low transmission fluid, dirty or contaminated transmission fluid, a faulty PCM or transmission control module. How do you troubleshoot P0734 ? The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. P0734 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired. Searches related to P0734 - Gear 4 Incorrect ratio how to fix incorrect gear ratio gear 4 incorrect ratio hyundai p0734 ford p0734 code chrysler p0734 hyundai p0734 bmw p0734 vw p0734 dodge ram 2500