P0700 Honda Accord
Transmission Control System Malfunction · Powertrain Code · High
What is P0700?
A general transmission fault code indicating the transmission control module has detected a problem. Check for additional transmission codes.
When the Honda Accord triggers code P0700 (transmission control system malfunction), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Honda Accord.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Honda Accord.
Common Causes on Honda Accord
- Transmission control module (TCM) has stored a fault code
- Failing transmission solenoid(s)
- Low or contaminated transmission fluid
- Wiring issue between TCM and PCM
Symptoms
- Check Engine Light on
- D indicator light flashing on dashboard
- Harsh or delayed shifting
- Transmission may go into limp mode (stuck in one gear)
- Possible no-shift condition
Notes for Honda Accord
P0700 is an informational code meaning the transmission has its own stored fault — you MUST read the transmission sub-codes to find the actual problem.