Code Definition

P0702 — Transmission Control System Electrical

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0702

P0702 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0702 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0702 code is triggered when the Engine Control Module (ECM) or the Transmission Control Module (TCM) detects an electrical problem within the transmission control system. This code specifically points to an issue in the electrical circuitry that governs the transmission's operation, such as solenoids, sensors, wiring, or connectors. The fault can be due to a variety of electrical failures, including short circuits, open circuits, or poor connections. These electrical issues can significantly impact the transmission's ability to shift gears, control torque converter lockup, and manage tran...

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