Chevrolet P1817: A/T Input Shaft Speed Sensor Malfunction (4T40-E/4T45-E)
Is your scanner showing Chevrolet P1817?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P1817: A/T Input Shaft Speed Sensor Malfunction (4T40-E/4T45-E)
OVERVIEWWhat Does The Chevrolet P1817 Code Mean?
Engine runtime over 5 seconds, TFP manual valve position switch signal not in Park or Neutral, VSS more than 5 mph, and the PCM detected the Input Shaft Speed sensor changed by over 100 rpm for 5 seconds.
What Are The Potential Causes Of The Chevrolet P1817 Code?
- A/T ISS connector is damaged or it has failed
- A/T ISS circuit is shorted to ground
- A/T ISS assembly is damaged or it has failed
- PCM 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:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts 12633238 Engine Control Module
>>> GM Genuine Parts 24230719 Automatic Transmission Manual Shift Detent Lever
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.
