P0700
Transmission Control System Malfunction
The transmission control module has detected a fault and set its own code.
P0700 is an informational code that tells you the transmission control module (TCM) has detected a problem and stored a transmission-specific code. You need to scan the TCM separately to find the actual fault code.
Symptoms
Common Causes
Underlying transmission fault
HIGHP0700 just points to the TCM - another code has the actual diagnosis.
Low transmission fluid
MEDIUMLow or dirty fluid causes various transmission faults.
Faulty solenoid
MEDIUMA shift solenoid or pressure solenoid has failed.
Step-by-Step Diagnosis
Scan TCM for codes
easyUse a scanner capable of reading transmission codes. P0700 just says "check TCM" - you need the specific code.
Check transmission fluid
easyCheck fluid level and condition. Should be red/pink, not brown or burnt smelling.
Address specific code
mediumDiagnose and repair whatever specific code the TCM has stored.
Frequently Asked Questions
The information on this page is provided for general educational and reference purposes only. ErrorCodes is not a substitute for professional automotive diagnosis or repair. Diagnostic trouble codes indicate areas for further investigation and do not definitively identify the failed component. The same code can have different causes depending on your specific vehicle, its history, and conditions. Always consult a qualified, certified mechanic before performing repairs. ErrorCodes assumes no liability for any repairs made based on information found on this site.