P0734

2017-10-10

Description:

  • The fault code P0734 indicates that there is an issue with the fourth gear ratio in the transmission. This may cause the vehicle to shift poorly or not at all in fourth gear.

Possible Symptoms:

  • Poor shifting or no shifting in fourth gear

  • Illuminated check engine light

  • Harsh shifting or slipping in other gears

  • Engine RPMs high but vehicle speed does not increase

  • Transmission overheating

Possible Causes:

  • Malfunctioning shift solenoids

  • Low transmission fluid levels

  • Worn or damaged transmission gears

  • Failed transmission control module (TCM)

  • Faulty valve body

  • Malfunctioning torque converter

Related Parts:

  • Transmission Shift Sensor: Gear Shift Sensor communicates the position the gear shifted to. Problems lead to difficulty in shifting gears

Possible Solutions:

  • Replace malfunctioning shift solenoids

  • Check and refill low transmission fluid levels

  • Replace worn or damaged transmission gears

  • Replace the transmission control module (TCM) if necessary

  • Repair or replace the valve body

  • Replace the torque converter if necessary

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