What this code generally means, its most common causes, and how serious it is.
This code is a pointer, not a cause in itself: it means the transmission control module (TCM) has logged a more specific code, and the engine control module is simply relaying that information. The real cause is in that specific transmission code — several appear elsewhere in this list (P0715, P0720, P0730, and others).
The real severity depends entirely on the specific transmission code that comes with P0700 — some are minor, others much more serious. Cautious driving is wise until that specific code is known, especially if jerky or abnormal shifting is felt.
Connect a Bluetooth OBD2 reader and read your vehicle's real codes with Meca — free, no appointment, with causes ranked for your actual situation.
🔌 Read my OBD2 codesNo, not by itself — it's a pointer to a more specific code stored in the transmission module. That second code needs to be read to know the real cause.
A code reader able to read transmission modules (not just the engine) is needed — some basic readers only cover the engine.
It depends on the specific code behind P0700 — without knowing it, it's safer to drive cautiously and avoid long trips until checked.