Cadillac P1811: Maximum Adaptive and Long Term Shift (4T80-E)
Is your scanner showing Cadillac P1811?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1811: Maximum Adaptive and Long Term Shift (4T80-E)
OVERVIEWWhat Does The Cadillac P1811 Code Mean?
Engine started, engine running and after an adaptable shift occurred, the PCM detected during Condition 1 the 1-2 Shift required more than 0.65 seconds and 1-2 Shift adaptive reached its limit; or during Condition 2, it detected the 2-3 Shift required
What Are The Potential Causes Of The Cadillac P1811 Code?
- Ask the customer about overloading the vehicle, exceeding the trailer-towing limit, or towing while in Overdrive position.
- ATF level is low, or the fluid is contaminated or burnt
- The line pressure is too low
- The pressure control solenoid valve is stuck
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> GM Genuine Parts 24248893 Automatic Transmission Pressure Control Solenoid Valve
>>> ACDelco GM OEM Dexron VI Automatic Transmission Fluid
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
GM, 2013, Service Bullettin – Prior To Any Circuit Testing.
