P0700
Get Serviced SoonFix: High — schedule within a weekTransmission Control System Malfunction — The PCM has detected a problem in the transmission or TCM. There will be additional codes in the transmission module.
Dashboard light triggered
Check Engine LightWhat to do
Get a full scan that reads transmission codes — P0700 is a generic flag. The real code will be in the TCM.
Common causes
- Low or dirty transmission fluid
- Faulty transmission control module
- Solenoid or sensor failure
- Internal transmission damage
Estimated repair cost
$200–$3,000+
Exact cost depends on the cause, your vehicle, and labor rates in your area.
What to tell your mechanic
Use this script so you sound informed and get a clear diagnosis before agreeing to repairs:
“Code P0700, transmission control system. Can you pull the transmission-specific codes? I know P0700 just means there are more codes in the TCM.”
About the Check Engine Light
Code P0700 triggers the Check Engine Light. Indicates an issue with the engine or emissions system. Could range from a loose gas cap to a serious engine misfire.
Read full Check Engine Light guideFrequently asked questions
- What does OBD code P0700 mean?
- Transmission Control System Malfunction — The PCM has detected a problem in the transmission or TCM. There will be additional codes in the transmission module.
- What dashboard light does P0700 trigger?
- P0700 triggers the Check Engine Light.
- How serious is P0700?
- Severity: yellow. Fix priority: High — schedule within a week.
- How much does it cost to fix P0700?
- Repair costs typically range from $200–$3,000+. The exact cost depends on the root cause and your vehicle.
Related OBD codes (same dashboard light)
These codes also trigger the Check Engine Light: