Chevrolet P1601: PCM Serial Communications Malfunction
Is your scanner showing Chevrolet P1601?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P1601: PCM Serial Communications Malfunction
OVERVIEWWhat Does The Chevrolet P1601 Code Mean?
Key on, and the PCM did not receive 25 valid responses from the IPC system, condition met for 5-10 seconds during the CCM test.
What Are The Potential Causes Of The Chevrolet P1601 Code?
- Inspect the serial data line for an open or shorted condition
- Determine if the BCM (module) is pulling the data line down
- Determine if the EBCM (module) is pulling the data line down
- TSB 61-65-67 contains a repair procedure for this code
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
>>> ACDelco GM Original Equipment 20896914 Electronic Brake and Traction Control Module with 4 Bolts
>>> GM Genuine Parts 22860591 Body Control Module
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.
