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P1790 Chrysler Code - Fault Immediately After Shift

Quick Answer

The P1790 Chrysler code indicates a fault that occurs immediately after a shift in the transmission. Common causes include Faulty transmission control module, Malfunctioning transmission solenoids, Damaged wiring or connectors. 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
P1790 Chrysler indicates Fault Immediately After Shift.
Common causes
Common causes include Faulty transmission control module, Malfunctioning transmission solenoids, Damaged wiring or connectors.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P1790 Chrysler Description

The P1790 Chrysler code indicates a fault that occurs immediately after a shift in the transmission. This can be caused by issues with the transmission control module, transmission solenoids, wiring/connectors, or internal transmission components. When this fault occurs, it can lead to erratic shifting, harsh shifting, slipping gears, or the transmission not engaging properly. If not addressed, it can cause further damage to the transmission system and result in costly repairs.

OBDII Code P1790 Chrysler - Fault Immediately After Shift
P1790 Chrysler Code - Fault Immediately After Shift

Common Causes of P1790 Chrysler

  1. Faulty transmission control module
  2. Malfunctioning transmission solenoids
  3. Damaged wiring or connectors
  4. Internal transmission components issues
  5. Low transmission fluid levels

Symptoms of P1790 Chrysler

  1. Erratic shifting
  2. Harsh shifting
  3. Slipping gears
  4. Transmission not engaging properly
  5. Check engine light illuminated

How to Fix P1790 Chrysler

  1. Perform a diagnostic scan to confirm the P1790 code and identify the specific issue.
  2. Inspect the transmission control module, solenoids, wiring, and connectors for any visible damage or loose connections.
  3. Check the transmission fluid level and condition, top up or replace as necessary.
  4. Test drive the vehicle to verify if the issue has been resolved after any repairs or replacements.
  5. If the problem persists, consider seeking professional help from a certified mechanic for further diagnosis and repair.

Cost to Fix P1790 Chrysler

The typical repair costs for addressing a P1790 Chrysler code can vary depending on the specific issue and the extent of repairs needed. It is recommended to budget anywhere from $200 to $800 for parts and labor. However, it's important to note that actual costs may vary based on factors such as location, vehicle make and model, and the mechanic's hourly rates. It's best to consult with a trusted auto repair shop for a more accurate estimate.

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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 P1790 Chrysler Code

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  • Me puede ayudar de favor tengo un problema con una camioneta town&country me saca el código p1790.
    Motor 3.8
    2008

    Reply to Comment

    • Claro, con gusto. El código P1790 en tu Town & Country 2008 con motor 3.8L indica que la transmisión detectó una falla justo después de un cambio de marcha. Este código no señala una parte específica, pero normalmente aparece cuando hay un problema en cómo la transmisión completa el cambio.

      Aquí algunas cosas que debes revisar primero:

      1. Nivel y estado del aceite de transmisión – Si está bajo, sucio o quemado, puede causar este tipo de fallos. Revisa el nivel en caliente con el motor encendido.
      2. Sensor de velocidad de entrada o salida (input/output speed sensor) – Si uno de estos sensores falla o tiene una señal intermitente, puede provocar ese código.
      3. Problemas eléctricos o de tierra – Conectores sueltos o corrosión en el arnés hacia la TCM (módulo de transmisión) pueden causar fallos falsos.
      4. TCM defectuoso o reprogramación pendiente – En algunos casos, una actualización del software o incluso reemplazo del módulo puede ser necesaria.

      Si la transmisión funciona bien al conducir, puede que sea algo leve como el sensor o el fluido. Pero si notas cambios bruscos, deslizamiento o falla al entrar en marcha, mejor evitar usarla mucho hasta revisarla. Puedes escanear con un equipo que lea los códigos específicos de transmisión para obtener más detalle.

      Reply to Comment