WRENCHIFY
Quick decodeBack to home
All codes/P0700

P0700

Transmission Control System Malfunction

High severity

This is a general code indicating that your car's main computer (PCM) has detected a fault within the transmission control system. It usually means there's another, more specific transmission-related code stored in the Transmission Control Module (TCM).

Transmission Control System Malfunction

Common causes

  • Other Transmission-Related DTCs

    P0700 is almost always accompanied by one or more specific transmission codes (e.g., P07XX series) that pinpoint the actual issue.

    high

    Typical part cost: Varies widely ($0-2000+)

  • Faulty Transmission Control Module (TCM)

    The TCM itself can fail, leading to various transmission problems and triggering P0700.

    medium

    Typical part cost: $300-1000+ part

  • See all causes + fix costs

    Create a free Wrenchify account to unlock the rest for P0700.

    Unlock causes

    Free forever · No credit card

First things to check

  1. 1Use an advanced OBD-II scanner to check for additional, specific transmission-related codes stored in the TCM.
  2. 2Check transmission fluid level and condition (color, smell).

Get the full step-by-step diagnosis

Create a free Wrenchify account to unlock the rest for P0700.

Unlock diagnosis

Free forever · No credit card

Tools you may need

Already have a compatible scanner? Use it. If not, a Bluetooth OBD2 adapter can help you confirm engine codes and check supported live sensor data before replacing parts.

Illustration of a Bluetooth OBD2 adapter, not a product photo

Basic checks

Veepeak OBDCheck BLE

A Bluetooth LE adapter for reading standard engine codes and supported live data.

View on Amazon
Illustration of a Bluetooth OBD2 adapter, not a product photo

Regular diagnostics

vgate iCar Pro BLE 4.0

A Bluetooth LE adapter with an automatic sleep feature for routine code and sensor checks.

View on Amazon
Illustration of a Bluetooth OBD2 adapter, not a product photo

Another option

OBDLink CX

A Bluetooth LE adapter to consider when comparing supported vehicles and diagnostic apps.

View on Amazon

Illustrations shown, not product photos. Check vehicle, phone and app compatibility before buying. These adapters do not guarantee access to ABS, airbags or manufacturer-specific systems. Clearing a code does not repair the fault and can reset emissions readiness monitors.

As an Amazon Associate, Wrenchify earns from qualifying purchases. This supports the app at no extra cost to you.

Related codes

See related trouble codes

Create a free Wrenchify account to unlock the rest for P0700.

Unlock related codes

Free forever · No credit card

Frequently asked questions

What should I do if I get a P0700 code?

The P0700 code is a general indicator. The most important step is to use an advanced OBD-II scanner to check for other, more specific transmission codes (P07xx series) that will tell you the exact nature of the transmission problem.

Does P0700 mean my transmission is completely broken?

Not necessarily. While it indicates a transmission issue, the severity varies greatly. It could be a minor electrical fault, a sensor issue, or a more serious internal problem. The accompanying codes will provide more clarity.

Get the full P0700 diagnosis for your vehicle

Year, make, model + step-by-step repair help — free plan included.

Diagnose P0700