FAULTBASE
Error CodesASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Ram/1500/DT (2019-Present)/why does my Ram 1500 DT (2019-Present) have a check engine light and code P0700

why does my Ram 1500 DT (2019-Present) have a check engine light and code P0700

Ram 1500 DT (2019-Present)

Error Codes
Severity: highDifficulty: mediumError Code: P07002-4 hours
3 min read
539 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 issue in Ram 1500 DT (2019-present). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0700
Component
Transmission
Repair Time
2-4 hours

Safety Warnings

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

Symptoms

  • •Check engine light illuminated
  • •Transmission not shifting properly
  • •Slipping or harsh shifting during gear changes
  • •Poor acceleration or loss of power
  • •Vehicle may go into limp mode
  • •Transmission fluid may appear discolored or burnt

Diagnostic Steps

  1. 1Scan the vehicle's onboard computer using an OBD-II scanner to confirm the P0700 code.
  2. 2Check for additional trouble codes related to the transmission system, as P0700 is a generic code indicating a transmission issue.
  3. 3Inspect the transmission fluid level and condition; look for discoloration or burnt smell.
  4. 4Examine the wiring and connectors leading to the transmission control module (TCM) for any signs of damage or corrosion.
  5. 5Test the TCM for proper functionality using a multimeter as per manufacturer specifications.
  6. 6Review service bulletins for any known issues related to the transmission control system on the Ram 1500 DT.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Ensure the vehicle is parked on a level surface and the engine is off.
  • Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

  • Sub-steps:
    • Locate the transmission dipstick and remove it.
    • Check fluid level; if low, top off with the manufacturer-recommended fluid.
    • If fluid is burnt or discolored, drain the transmission fluid using a fluid pump and replace it with new fluid.
  • Tools required:
    • Fluid pump
    • Transmission fluid (check specifications for type)
  • Safety warnings:
    • Allow the engine to cool before working on the transmission.

3. Inspect and Repair Wiring/Connectors

  • Sub-steps:
    • Visually inspect the wiring harness and connectors for any signs of wear, corrosion, or damage.
    • Repair or replace any damaged wiring or connectors.
    • Apply dielectric grease to connectors to prevent future corrosion.
  • Tools required:
    • Wire stripper/crimper
    • Multimeter for testing continuity

4. Test and Replace Transmission Control Module (if necessary)

  • Sub-steps:
    • If testing reveals the TCM is faulty, remove the old TCM by disconnecting the wiring harness and unscrewing the module.
    • Install the new TCM, ensuring all connections are secure.
    • Reconnect the battery and clear codes using the OBD-II scanner.
  • Tools required:
    • Socket set
    • OBD-II scanner for code clearing

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
  • Fluid pump

Parts Required

  • Transmission fluid (check specifications)
  • Transmission control module (if needed)

Additional Information

Error CodeP0700
Component

Transmission

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

4 items

Parts

2 items

Related Faults

  1. why does my Ram 1500 DT (2019-Present) battery die after a few days

    Learn how to diagnose and fix battery drain issues in 2019 Ram 1500 DT. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Electrical5 symptoms

  2. my Ram 1500 is hard to start when cold what's the issue

    Learn how to diagnose and fix cold start issues in Ram 1500. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Engine5 symptoms

  3. why does my Ram 1500 DT (2019-Present) check engine light come on and off

    Learn how to diagnose and fix the intermittent check engine light issue on your Ram 1500 DT. Step-by-step guide with diagnostic procedures and repair instructions.

    Engine5 symptoms

  4. how to fix transmission slipping in my Ram 1500 DT (2019-Present)

    Learn how to diagnose and fix transmission slipping in your 2019 Ram 1500 DT. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Transmission6 symptoms

  5. why is my Ram 1500 DT (2019-Present) oil pressure warning light on

    Learn how to diagnose and fix the oil pressure warning light issue in Ram 1500 DT (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

    Engine6 symptoms

  6. why does my Ram 1500 DT (2019-Present) make a whistling sound

    Learn how to diagnose and fix whistling sound issues in Ram 1500 DT (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

    Engine5 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