Transmission Fluid Overtemperature Condition
The P2806 code means the vehicle's onboard diagnostic system has detected: Transmission Fluid Overtemperature Condition. This is a critical severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- moderate
- Estimated cost
- $200 - $1500 (parts and labor)
Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.
Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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What Are the Symptoms of P2806?
- Transmission overheating warning on dashboard
- Transmission fluid very hot
- Burnt smell from transmission
- Transmission in thermal protection mode
What Causes P2806? (Most Likely First)
- Clogged transmission cooler Very High
- Towing heavy loads in hot weather High
- Low or degraded transmission fluid Moderate
- Torque converter clutch slipping excessively Moderate
Can I Still Drive with P2806?
No — stop driving. P2806 is rated critical severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
How hot is too hot for transmission fluid?
Most transmission fluids begin degrading above 220F and suffer rapid damage above 250F. Above 300F, seals and clutch packs can be permanently damaged.
Can I continue driving after the transmission cools?
Let it cool completely first. If overheating was from external factors (towing, traffic), it may be fine. If it recurs, there is an underlying issue.
How long does transmission fluid last when overheated?
Every 20 degrees above 200F cuts fluid life in half. A single severe overheat event can permanently degrade the fluid, requiring immediate replacement.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P2806?
-
Check transmission fluid level and condition
-
Inspect transmission cooler for blockage
-
Test cooler flow rate
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Monitor TCC operation for slipping
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Which Vehicles Commonly Get P2806?
- 2010-2020 Ford F-150
- 2011-2020 Chevrolet Silverado
- 2012-2019 Ram 1500
- 2010-2018 Toyota Tundra
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