Cadillac P1818: A/T Manual Shaft Shift Switch Circuit Malfunction (5L40-E)
Is your scanner showing Cadillac P1818?
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Cadillac P1818: A/T Manual Shaft Shift Switch Circuit Malfunction (5L40-E)
OVERVIEWWhat Does The Cadillac P1818 Code Mean?
Engine runtime over 5 seconds, system voltage from 8-18v, APP angle over 5%, vehicle speed over 5 mph.
What Are The Potential Causes Of The Cadillac P1818 Code?
- Manual shaft shift switch connector is open or shorted
- Manual shaft shift switch circuit is open or signals are shorted
- Manual shaft shift switch is damaged or out of adjustment
- TCM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
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.
