Chevrolet P163C: Glow Plug Module Primary Circuit

What Does The Chevrolet P163C Code Mean?

• The glow plug control module detects a variation between the battery positive voltage circuit to the glow plug control module, Ignition 1 signal circuit, and/or the ECM voltage circuit for 130 ms.
• The following conditions will set the DTC:
• Glow plug control module battery positive voltage circuit is greater than 16.5 V, and ignition 1 signal circuit is between 9-14 V.
• Glow plug control module battery positive voltage circuit is less than 6 V, and ignition 1 signal circuit is between 9-16 V.
• The difference between the glow plug control module battery positive voltage circuit, and ignition 1 signal circuit is greater than 5 V during glow plug operation.
• The difference between the glow plug control module battery positive voltage circuit and the ECM voltage circuit is greater than 3 V during glow plug operation.

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 Diesel Glow Plug Controller

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chevrolet P163C, DTCDECODE.