P0700: Transmission Control System Malfunction
Can you still drive? Use caution. Depending on the underlying transmission code, driving could cause further damage. Check the fluid level immediately and avoid hard acceleration.
What Does P0700 Mean?
Code P0700 is an informational code indicating that the transmission control module (TCM) has detected a fault and set a transmission-specific code. P0700 itself does not identify the problem; it simply tells you to read the transmission codes with a scan tool capable of accessing the TCM. The actual fault is stored in the transmission module.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Various transmission faults stored in TCM
- Low transmission fluid level
- Failed shift solenoid
- Worn transmission clutch packs
- TCM communication issue
- Faulty transmission wiring
Symptoms
- Check engine light on
- Transmission warning light on
- Harsh or delayed shifting
- Transmission stuck in one gear
- Transmission slipping
Diagnostic Steps
- 1Read transmission-specific codes from TCM with advanced scan tool
- 2Check transmission fluid level and condition
- 3Monitor transmission data PIDs during test drive
- 4Check transmission wiring harness for damage
- 5Inspect transmission connector for corrosion
- 6Perform transmission line pressure test if applicable
- 7Check for TSBs related to the specific transmission codes found
Recommended Parts & Tools
transmission fluid
shift solenoid
transmission filter kit
OBD-II scan tool with TCM access
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $100 - $4000 |
| Parts Only (DIY) | $80 - $200 |
| Labor (1-2 hrs @ $100/hr) | $100 - $200 |
Get a Personalized AI Diagnostic Report
Get a detailed AI diagnosis for code P0700 specific to your vehicle. Includes step-by-step repair instructions, exact parts needed, and a cost breakdown tailored to your make and model.
Chat with AI About P0700Commonly Affected Vehicles
Related Recalls
Frequently Asked Questions
What does P0700 mean exactly?
P0700 is a generic code that tells you the transmission module has stored a fault code. You need a scan tool that can read transmission codes to find the actual problem.
Can low transmission fluid cause P0700?
Yes, low transmission fluid is a common cause of transmission faults that trigger P0700. Check the fluid level on the dipstick with the engine running and transmission in park.
Is P0700 expensive to fix?
The cost depends entirely on the underlying transmission code. It could be as simple as a $100 solenoid or as expensive as a $3,000-$4,000 transmission rebuild.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
Related Codes
Affiliate Disclosure: This page contains affiliate links. If you purchase products through these links, we may earn a small commission at no additional cost to you. This helps us maintain this free resource. We only recommend products we believe will help you diagnose and repair your vehicle. Prices shown are estimates and may vary.