AutoCodes - Infiniti - P0734 INFINITI

P0734 INFINITI Code - 4th. Gear Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0734 INFINITI code possible causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Shift solenoids
  • Transmission mechanical problems
  • Transmission hydraulic control circuit

|How do I fix the P0734 INFINITI code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|P0734 INFINITI code tech notes

Start by inspecting the transmission fluid level and condition, and change fluid if necessary.

|Cost of diagnosing the P0734 INFINITI code

Labor: 1.0

The cost of diagnosing the P0734 INFINITI code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0734 INFINITI code detected?

P0734 is detected when A/T cannot be shifted to the 4th gear position even if electrical circuit is good.

|What are P0734 INFINITI code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Incorrect transmission shifting

|P0734 INFINITI code description

This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
OBDII Code P0734 Infiniti - 4th. Gear Malfunction -

|Need more information with the P0734 INFINITI code?

Need more information on how to fix the P0734 INFINITI code? Get Access to Factory Service Manuals

|Need help with a P0734 INFINITI code?

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|P0734 INFINITI code comments

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