SAE Standard Definition

P0700

Transmission Control System Malfunction

The transmission control module has detected a fault and set its own code.

Serious Issue- Drive with caution, repair soon
Serious
Safe to drive intermediate Fix within 3 days
Estimated Cost (USD)$0 - $3,000
BudgetMajor
Estimated Labor~1 hours

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

Check Engine Light on
Transmission warning light
Harsh shifting
Transmission may be in limp mode

Common Causes

Underlying transmission fault

HIGH

P0700 just points to the TCM - another code has the actual diagnosis.

Low transmission fluid

MEDIUM

Low or dirty fluid causes various transmission faults.

Faulty solenoid

MEDIUM

A shift solenoid or pressure solenoid has failed.

Step-by-Step Diagnosis

1

Scan TCM for codes

easy

Use a scanner capable of reading transmission codes. P0700 just says "check TCM" - you need the specific code.

Tools:Enhanced OBD-II scanner
2

Check transmission fluid

easy

Check fluid level and condition. Should be red/pink, not brown or burnt smelling.

3

Address specific code

medium

Diagnose and repair whatever specific code the TCM has stored.

Tools:Varies

Frequently Asked Questions

Disclaimer

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.