Cadillac P1A7E: Starter/Generator Control Module Overtemperature High Voltage System Disabled
Is your scanner showing Cadillac P1A7E?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1A7E: Starter/Generator Control Module Overtemperature High Voltage System Disabled
OVERVIEWWhat Does The Cadillac P1A7E Code Mean?
The Starter/Generator Control Module (SGCM) monitors its internal fluid temperature sensors to control the SGCM coolant pump and SGCM cooling fan. The internal fluid temperature sensors of the SGCM are thermistors and are not serviceable.
When the internal fluid temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the internal fluid temperatures are hot, the resistances of the sensors are low and the voltage signals are low.
The input parameters are not displayed on the scan tool. The SGCM calculates the estimated temperature of the electronics to interpret the total temperature of the SGCM. This value is displayed on the scan tool.
What Are The Potential Causes Of The Cadillac P1A7E Code?
If there is a restriction of the air flow through the radiator this DTC may set. Ensure that the vehicle front end has at least 1.5 meters (5 feet) of clearance from obstructions to airflow if vehicle is parked.
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 Alternator Battery Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac P1A7E, DTCDECODE.
