Cadillac P1376: IC Module Ignition Ground Circuit Malfunction

What Does The Cadillac P1376 Code Mean?

DTC P0560 not set, engine started, and the PCM detected the ICM REF Low signal was over 1.48v, or the ICM REF Low signal was under -1.01v, either condition met for 1 second.

What Are The Potential Causes Of The Cadillac P1376 Code?

• IC module ground circuit is open or has high resistance
• IC module reference low circuit is open or has high resistance
• IC module reference low circuit shorted to VREF or power (B+)
• This code may set if the PCM is not installed properly

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 86689C 399 PC Automotive Electrical Repair Kit

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.