P0700 — Transmission Control System Malfunction
Category: Powertrain Severity: High
Updated:
DTC code P0700 means: Transmission Control System Malfunction. It falls under the "Powertrain" category, with an estimated severity of High. Common causes include transmission internal fault (read TCM codes), faulty transmission solenoid and low/contaminated fluid; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Transmission internal fault (read TCM codes)
- Faulty transmission solenoid
- Low/contaminated fluid
- Wiring/connector issue
Symptoms
- Harsh shifts
- Transmission slips
- Limp mode
How to diagnose it step by step
- P0700 only means the transmission module has a stored fault.
- Read the transmission control module (TCM) codes with a full scan tool.
- Check ATF level and condition.
- Diagnose based on the specific TCM code.
How to fix it
Check the transmission fluid level/condition and the solenoids.
Estimated repair cost
Depends on the TCM code: from $200 (fluid service) to $4,000 (rebuild).
Frequently asked questions
What does DTC code P0700 mean?
Transmission Control System Malfunction.
Is code P0700 serious?
Severity High. Have it checked as soon as possible, especially if it affects safety or the catalytic converter.
Can I keep driving with code P0700?
Carefully; the transmission may be in limp mode.
Related codes
P0705 P0706 P0710 P0711 P0715 P0717 P0720 P0730 P0731 P0732
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