Cadillac P1601: ECM (PCM) Over-Temperature Malfunction
Is your scanner showing Cadillac P1601?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1601: ECM (PCM) Over-Temperature Malfunction
OVERVIEWWhat Does The Cadillac P1601 Code Mean?
Engine started; and the PCM detected an internal PCM temperature of more than 221ºF, or an internal PCM temperature less than -58ºF or over 284ºF.
How Can You Fix The Cadillac P1601 Code?
- Verify that the relay center cover is properly installed
- Check for a damaged relay center
- Check for air blockage/obstructions preventing proper airflow
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
