P0700 is reported as transmission controller requests warning-lamp illumination. The next step depends on the full scan and the exact vehicle, not the code alone.
If braking, steering, power, temperature, smoke, or fuel smell is abnormal, stop safely; otherwise save the full scan and arrange diagnosis.
This General Motors document supports only its stated code and vehicle context. The code alone cannot identify a failed part, prove that another make uses the same definition, or clear a car for driving. Compare your full scan with the current exact-vehicle service information.
Read the General Motors original: 18-NA-270 Source date: 2019-02; research checked: 2026-11-01.
What this code means
P0700: Transmission controller requests warning-lamp illumination. This is a source-scoped technical description. It does not prove that any named component has failed.
Namespace obd_reference
Make scope No exact vehicle application established
Definition status source supported definition vehicle applicability unverified
Why this exact code matters
The transmission controller requested the warning lamp. This is a request/status code: the decisive fault details are in the transmission module and may be invisible to a basic emissions reader.
Compare P0715: input speed circuit. A related code is a different observation, not a second diagnosis.
Evidence to save for this code
- TCM codes, not just the engine-module request
- Shift behavior, temperature message and fluid-leak observations
Keep the complete module scan and any accompanying warning; a single emissions code cannot show every relevant fault.
Ask for a measured diagnosis
- Can the tool read the exact TCM and its enhanced data?
- Are power/wiring/sensor/software or internal mechanical causes supported?
The Transmission codes: retrieve the module’s own evidence guide has the shared system checks and after-repair questions. Those broad checks apply to a system, while the meaning above is specific to P0700.
Vehicle and scanner limits
We have not verified this code for every make, model, year or engine. A generic emissions scanner may not read the body, chassis, transmission or EV module that holds related faults. Compare the full scan with the owner manual and manufacturer service information.
Sources and scope
- General Motors — 18-NA-270 Document: 2019-02 · Research checked: 2026-11-01
- Honda — 25-017 Document: 2025-01-27 · Research checked: 2026-11-01
- Ford — Gasoline OBD System Operation Summary MY 2024–2025 Document: 2024-04-16 · Research checked: 2026-11-01
- Nissan USA — 2025 Rogue Owner’s Manual Document: date not recorded · Research checked: 2026-11-01
Research snapshot: 2026-11-01. Source documents may have newer revisions. Verify current instructions and VIN eligibility with the manufacturer.