AutoCodes – Generic – P1D74

P1D74 Code - Gear Shift Actuator 'B' Position Out Of Range

Quick Answer

This diagnostic compares the gear shift actuator 2nd-4th position to a minimum and maximum threshold values of allowable mechanical positions. Common causes include Transmission Hydraulic System, Transmission Mehanical Operation, Faulty Transmission Control module (TCM). 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: P1D74 indicates Gear Shift Actuator 'B' Position Out Of Range.
Common causes: Common causes include Transmission Hydraulic System, Transmission Mehanical Operation, Faulty Transmission Control module (TCM).
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.

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Code Popularity 2,543

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1D74 Description

This diagnostic compares the gear shift actuator 2nd-4th position to a minimum and maximum threshold values of allowable mechanical positions. The actuator position is read by a position sensor which provides an output signal with Pulse Width Modulation (PWM) at a fixed frequency and duty cycle proportional to the position of the actuator. The PWM duty cycle electrical range is between 10% and 90%. If the position sensor signal is within this electrical range but it indicates the actuator position is outside of its expected mechanical travel, then the diagnostic will be considered failing.

OBDII Code P1D74 - Gear Shift Actuator 'B' Position Out Of Range - AutoCodes.com — P1D74 Code - Gear Shift Actuator 'B' Position Out Of Range

What does this mean?

What are the Possible Causes of the DTC P1D74?

Transmission Hydraulic System
Transmission Mehanical Operation
Faulty Transmission Control module (TCM)

How to Fix the DTC P1D74?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1D74 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific Makes

P1D74 Acura — Generator Motor Temperature Sensor Range/Performance Problem Low
P1D74 Chrysler — Gear Shift Actuator 'B' Position Out Of Range
P1D74 Dodge — Gear Shift Actuator 'B' Position Out Of Range
P1D74 Fiat — Gear Shift Actuator 'B' Position Out Of Range
P1D74 Honda — Generator Motor Temperature Sensor Range/Performance Problem Low
P1D74 Jeep — Gear Shift Actuator 'B' Position Out Of Range

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.

Frequently Asked Questions about P1D74 Code

1. What are the common symptoms of OBDII code P1D74 (Gear Shift Actuator 'B' Position Out Of Range)?

- Common symptoms include difficulty shifting gears, jerky or rough gear changes, and potentially the vehicle going into limp mode.

2. What are the possible causes of OBDII code P1D74?

- The code P1D74 can be triggered by a faulty gear shift actuator, damaged wiring or connectors in the gear shift system, or issues with the transmission control module.

3. How can I diagnose the cause of OBDII code P1D74?

- Diagnosing the cause of this code typically involves checking the gear shift actuator, inspecting the wiring and connectors for damage, and performing a thorough scan of the transmission control module.

4. Can I continue driving my vehicle with OBDII code P1D74?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the transmission system. It is best to address the issue promptly.

5. How can I repair OBDII code P1D74?

- Repairing this code may involve replacing the gear shift actuator, repairing or replacing damaged wiring and connectors, or reprogramming the transmission control module. It is recommended to consult a professional mechanic for proper diagnosis and repair.

6. Is OBDII code P1D74 a serious issue?

- Yes, OBDII code P1D74 should be taken seriously as it can affect the proper functioning of the transmission system and potentially lead to more severe transmission problems if not addressed promptly.

7. Can a DIY enthusiast fix OBDII code P1D74 at home?

- While some aspects of diagnosing and repairing this code may be possible for experienced DIY enthusiasts, it is recommended to seek the help of a professional mechanic due to the complexity of transmission system repairs.

8. How much does it cost to repair OBDII code P1D74?

- The cost of repairing OBDII code P1D74 can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of parts needed for the repair. It's best to obtain a few quotes from different mechanics.

9. How long does it take to repair OBDII code P1D74?

- The repair time for OBDII code P1D74 can vary depending on the exact cause of the issue and the extent of the repairs needed. It's advisable to consult with a mechanic for a more accurate estimate of the repair time.

10. Can I prevent OBDII code P1D74 from occurring in the future?

- Regular maintenance of the transmission system, such as checking for any signs of wear or damage, can help prevent OBDII code P1D74 from occurring. Additionally, driving gently and avoiding harsh gear changes can also help prevent issues with the gear shift actuator.