AutoCodesInfiniti – P1704 2003 Infiniti G35

P1704 2003 Infiniti G35 Code - Transmission Control Module

Quick Answer

The transmission solenoids and valves are controlled by the Transmission Control Module (TCM) in response to signals sent from the Park & Neutral Position (PNP) Switch, Vehicle Speed Sensor (VSS), and Accelerator Pedal Position (APP) Sensor (Throttle Position Sensor). Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection. 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
P1704 2003 Infiniti G35 indicates Transmission Control Module.
Common causes
Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 6,041
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 30, 2020
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Code P1704 2003 Infiniti G35 Description

The transmission solenoids and valves are controlled by the Transmission Control Module (TCM) in response to signals sent from the Park & Neutral Position (PNP) Switch, Vehicle Speed Sensor (VSS), and Accelerator Pedal Position (APP) Sensor (Throttle Position Sensor). The Diagnostic Trouble Code (DTC) will set when the TCM memory Electrically Erasable Programmable Read Only Memory (EEPROM) is malfunctioning.
OBDII Code P1704 2003 Infiniti G35 - Transmission Control Module - AutoCodes.com
P1704 2003 Infiniti G35 Code - Transmission Control Module

What are the Possible Causes of the DTC P1704 2003 Infiniti G35?

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection

How to Fix the DTC P1704 2003 Infiniti G35?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1704 2003 Infiniti G35 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.

Need more information about the P1704 2003 Infiniti G35 code?

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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.

Frequently Asked Questions about P1704 2003 Infiniti G35 Code

What does the OBDII code P1704 mean for a 2003 Infiniti G35?

The P1704 code indicates a problem with the Transmission Control Module (TCM), specifically related to the communication or functionality of the transmission system.

What are common symptoms associated with the P1704 code?

Symptoms can include harsh or erratic shifting, the vehicle going into limp mode, poor acceleration, or the Check Engine Light being illuminated.

What could cause the P1704 code to trigger in my Infiniti G35?

Common causes include a faulty Transmission Control Module, wiring issues, poor connections, or a malfunctioning transmission sensor.

How can I diagnose the P1704 code effectively?

Start by scanning the vehicle’s OBDII system for codes, visually inspect wiring and connectors related to the TCM, and check for any other related codes that might indicate additional issues.

What are some repair tips for fixing the P1704 code?

Inspect and repair any damaged wiring or connections, test the TCM for functionality, and consider replacing the TCM if it's determined to be faulty.

Is it safe to drive my Infiniti G35 with the P1704 code?

It may not be safe, as the vehicle could experience erratic shifting or enter limp mode, potentially leading to unsafe driving conditions.

How much does it typically cost to repair the P1704 code?

Repair costs can vary widely depending on the issue, but replacing a Transmission Control Module can range from $500 to $1,500, including parts and labor.

Can a transmission fluid change help with the P1704 code?

While a transmission fluid change won't directly fix the P1704 code, ensuring proper fluid levels and quality can help maintain transmission health and prevent related issues.

Will clearing the code P1704 fix my vehicle's symptoms?

Clearing the code may temporarily turn off the Check Engine Light, but if the underlying issue with the TCM or transmission persists, the symptoms will likely return.

Discuss the causes and fixes for P1704 2003 Infiniti G35 OBDII Code

  • I have a 2005 G35 coupe with automatic transmission and have problems with the control untint that is located inside of the transmission,

  • Yes the Transmission Control Module (TCM) is located inside the transmission, attached to the valve body.

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