Transmission · Severity: Moderate
P0700 — Transmission Control System Malfunction
The transmission control module has stored a fault and asked the ECU to turn on the warning light.
Common symptoms
- Engine light
- Harsh or delayed shifts
- Stuck in one gear (limp mode)
Likely causes
- Any fault stored in the TCM
- Low or degraded ATF
- Faulty solenoids
- Wiring faults
First test to run
Read the transmission module directly — P0700 is only a flag; the real fault code is stored in the TCM.
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