P0702 Code: Transmission Control System Electrical

Modern vehicles are equipped with several systems that work together to ensure that your vehicle runs smoothly. One of them is your transmission control system.

P0702 is one of several trouble codes related to a fault in the transmission control system. Know more about it through this article.

What Does the P0702 Code Mean?

Diagnostic trouble code P0702 stands for “Transmission Control System Electrical.”

This code is set once the PCM detects an electrical issue in the transmission control system. The P0702 fault code can be logged on vehicles with automatic transmissions.

The automatic transmission’s role is to automatically select different gear ratios or ‘speeds’ to power the wheels in order to match the engine’s optimum power and torque characteristics to the driver’s desired rate of acceleration and speed. When the PCM detects a problem with the electronics that govern the transmission, it will set code P0702.

Note: The definition of code P0702 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.

What Are the Common Causes of the P0702 Code?

• Transmission control module (TCM) malfunction
• Transmission failure
• Transmission valve body solenoid failure
• Problems involving wirings

What Are the Common Symptoms of the P0702 Code?

• Illuminated check engine light
• Increased fuel consumption
• Transmission might not shift properly

How to Diagnose the P0702 Code

DTC P0702 can be logged on a variety of vehicles. However, this doesn’t mean there is a one-size-fits-all solution to this issue.

Advanced auto repair knowledge and skills are needed to conduct transmission repairs. In most cases, it’s best to take your vehicle to a certified mechanic to get an accurate diagnosis.

How to Fix the P0702 Code

The process of clearing a P0702 code may vary depending on the vehicle’s year, make, and model. Therefore, it’s important to have vehicle-specific repair information before attempting any fixes.

You may enlist the services of a professional or attempt to do the repairs yourself. Whichever route you choose, we recommend brushing up on your auto repair knowledge by consulting your vehicle’s repair manual or looking up vehicle-specific information from an online repair database.