P0700: Transmission Control System Malfunction (MIL Request)
Diagnostic trouble code P0700 — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does P0700 mean?
P0700 indicates: Transmission Control System Malfunction (MIL Request).
This relates to the Transmission / TCM system.
Common causes of P0700
Companion transmission DTC present — read TCM codes for the specific fault
Get the confirmed root cause for P0700 — on YOUR vehicle
A code is a symptom, not a diagnosis. AutoDX Pro cross-checks several
independent assessments, pinpoints the actual root cause, gives you the
exact tests to confirm it, and shows the parts — only after the cause is
confirmed. Reads your scan-tool photo and decodes your VIN with open
recalls.
P0700 is a diagnostic trouble code: Transmission Control System Malfunction (MIL Request).
What are the common causes of P0700?
Common causes include: Companion transmission DTC present — read TCM codes for the specific fault. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving with P0700?
It depends on the fault and your symptoms. Some causes are minor, others can damage components or affect safety. Get the root cause confirmed before deciding.
How do I fix P0700?
Confirm the actual root cause with targeted tests first, then replace only the part that's at fault. AutoDX Pro gives you the root cause, the exact tests, and the parts for P0700 on your specific vehicle.