FAULTBASE
Error CodesASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Genesis/G70/IG (2017-2023)/how to fix P0700 transmission trouble code in Genesis G70 IG (2017-2023)

how to fix P0700 transmission trouble code in Genesis G70 IG (2017-2023)

Genesis G70 IG (2017-2023)

Error Codes
Severity: highDifficulty: mediumError Code: P07002-4 hours
3 min read
582 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0700 transmission trouble code in Hyundai Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0700
Affected Component
Transmission
Estimated Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before working on the transmission components.

Symptoms

  • •Check engine light illuminated
  • •Transmission shifting issues (harsh or delayed shifts)
  • •Unresponsive transmission
  • •Reduced acceleration or power loss
  • •Transmission overheating warning
  • •Erratic gear engagement

Diagnostic Steps

  1. 1Scan the vehicle using an OBD-II scanner to confirm the P0700 code and check for any additional transmission-related codes.
  2. 2Inspect the transmission fluid level and condition; low or dirty fluid can cause transmission issues.
  3. 3Check the wiring and connectors related to the TCM for any signs of damage, corrosion, or loose connections.
  4. 4Test the TCM using a multimeter to ensure it is receiving the correct input signals and providing output signals to the transmission.
  5. 5Examine the vehicle's speed sensors, as faults here can also trigger the P0700 code.
  6. 6If applicable, check for software updates for the TCM that may address known faults.

Solution

Solution

1. Preparation

  • Gather necessary tools and ensure the vehicle is parked on a flat surface.
  • Disconnect the battery to ensure safety while working on electrical components.

2. Check and Replace Transmission Fluid

  • Tools Required: Socket set, funnel, fluid catch pan
  • Check the transmission fluid level using the dipstick; if low, top off with the manufacturer-recommended transmission fluid.
  • If the fluid is dark or has a burnt smell, drain and replace the fluid:
    1. Place a fluid catch pan under the transmission pan.
    2. Remove the transmission pan bolts and carefully lower the pan.
    3. Clean the pan and replace the filter if necessary.
    4. Reinstall the pan and bolts to the specified torque (usually 8-10 ft-lbs).
    5. Refill with the appropriate transmission fluid using the funnel.

3. Repair/Replace TCM

  • Tools Required: Socket set, OBD-II scanner
  • If diagnostics indicate TCM failure:
    1. Locate the TCM, which is typically found near the transmission or under the dashboard.
    2. Disconnect the wiring harness from the TCM.
    3. Remove the mounting bolts and take out the TCM.
    4. Install the new TCM, ensuring it is securely mounted.
    5. Reconnect the wiring harness.

4. Clear Codes and Test Drive

  • Tools Required: OBD-II scanner
  • After repairs, clear the P0700 code:
    1. Use the OBD-II scanner to clear all transmission-related codes.
    2. Conduct a test drive to ensure the transmission operates correctly and monitor for any reoccurrence of the code.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Multimeter
  • •Socket set
  • •Funnel
  • •Fluid catch pan

Parts Required

  • •Transmission fluid
  • •Transmission filter (if applicable)
  • •Transmission Control Module (if faulty)

Additional Information

Error Code
P0700
Affected Component
Transmission
Estimated Time
2-4 hours
Difficulty
medium
Severity
high
Tools Required
5 items
Parts Required
3 items

Related Faults

  1. my Genesis G70 has a rough start in the morning what's wrong

    Learn how to diagnose and fix rough starting issues in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    Electrical5 symptoms

  2. my Genesis G70 has an oil leak, how to identify the source

    Learn how to identify and fix oil leaks in your Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    Engine5 symptoms

  3. my Genesis G70 engine makes a rattling sound at startup what is it

    Learn how to diagnose and fix engine rattling at startup in Genesis G70. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Engine5 symptoms

  4. why does my Genesis G70 make a clunking noise when going over bumps?

    Learn how to diagnose and fix clunking noise in Genesis G70 suspension. Step-by-step guide with diagnostic procedures and repair instructions.

    Suspension5 symptoms

  5. what does it mean if my Genesis G70 has a P0730 code

    Learn how to diagnose and fix P0730 transmission gear ratio issue in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    P0730Transmission6 symptoms

  6. how to fix the noise coming from my Genesis G70 exhaust?

    Learn how to diagnose and fix exhaust noise issues in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    Exhaust System5 symptoms

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation