Engine-CodesChrysler – P0734 Chrysler

P0734 Chrysler Code - Gear Ratio Error In Fourth Gear

Quick Answer

The P0734 code for Chrysler vehicles indicates a gear ratio error in the fourth gear. Common causes include Low transmission fluid level or dirty transmission fluid, Faulty transmission solenoid, Transmission valve body issues. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0734 Chrysler indicates Gear Ratio Error In Fourth Gear.
Common causes
Common causes include Low transmission fluid level or dirty transmission fluid, Faulty transmission solenoid, Transmission valve body issues.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P0734 Chrysler Description

The P0734 code for Chrysler vehicles indicates a gear ratio error in the fourth gear. This means that the transmission is not shifting properly into fourth gear, which can lead to various performance issues. The gear ratio error can cause the vehicle to experience issues with acceleration, fuel efficiency, and overall driving performance. If left untreated, this issue can potentially cause further damage to the transmission system and other related components.

OBDII Code P0734 Chrysler - Gear Ratio Error In Fourth Gear
P0734 Chrysler Code - Gear Ratio Error In Fourth Gear

Common Causes of P0734 Chrysler

  1. Low transmission fluid level or dirty transmission fluid
  2. Faulty transmission solenoid
  3. Transmission valve body issues
  4. Worn or damaged transmission gears
  5. Wiring or electrical issues within the transmission system

Symptoms of P0734 Chrysler

  1. Delayed or harsh shifting into fourth gear
  2. Slipping or erratic shifting in fourth gear
  3. Decreased fuel efficiency
  4. Illumination of the Check Engine Light
  5. Transmission overheating

How to Fix P0734 Chrysler

  1. Check and refill transmission fluid to the proper level
  2. Inspect and potentially replace the transmission solenoid
  3. Perform a transmission flush to clean out any debris or contaminants
  4. Inspect and potentially replace the transmission valve body
  5. Check and repair any wiring or electrical issues within the transmission system

Cost to Fix P0734 Chrysler

The cost to repair a gear ratio error in fourth gear can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the repair costs for this type of transmission issue can range from $500 to $1500, including parts and labor. It's important to note that diagnosis time and labor rates can vary, so it's recommended to consult with a trusted auto repair shop for a more accurate estimate based on your vehicle's make and model. Additionally, consider factors such as location and the type of shop (dealer vs. independent) when estimating repair costs.

Tech Notes for P0734 Chrysler

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

When is the Code Detected?

The ECM has detected that the transmission input RPM does not match the transmission output RPM under known conditions

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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