Code Definition

P0700 — Transmission Control System Malfunction

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

About P0700

P0700 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 P0700 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 fault code P0700 is set when the Engine Control Module (ECM) receives a signal from the Transmission Control Module (TCM) indicating a general malfunction in the transmission control system. This code is essentially an informational code used to alert the ECM of a problem, prompting further diagnosis. P0700 does not specify the exact nature of the problem but indicates that the TCM has detected a fault within the transmission system that needs to be addressed. Since P0700 is a general code, further diagnosis with specific transmission-related codes is necessary to identify the exact issue....

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