Chevrolet C1256: Program ROM Checksum Error
Is your scanner showing Chevrolet C1256?
No worries. We'll show you what it means and how to deal with it.
Chevrolet C1256: Program ROM Checksum Error
OVERVIEWWhat Does The Chevrolet C1256 Code Mean?
This code indicates that the EBCM detects an internal malfunction.
Conditions for setting the DTC: Ignition ON. Ignition voltage is greater than 10 volts.
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
>>> Dorman 599-705 Remanufactured ABS Control Module for Select Chevrolet/GMC Models (Renewed)
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Chevrolet Volt Hybrid DTC – OBDG01 HYBRID Diagnostics Document, page 586.
