Cadillac P1662: Cruise Lamp Control Circuit Malfunction
Is your scanner showing Cadillac P1662?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1662: Cruise Lamp Control Circuit Malfunction
OVERVIEWWhat Does The Cadillac P1662 Code Mean?
Engine started, vehicle driven to a speed of over 40 rpm, system voltage over 10.0v, Cruise Control engaged, and the PCM detected an unexpected voltage on the Cruise Lamp driver control circuit. The PCM turns the CRUISE lamp “on” whenever cruise operation.
What Are The Potential Causes Of The Cadillac P1662 Code?
- Cruise lamp control circuit is open, shorted to ground or to B+
- Cruise lamp power circuit is open or the bulb is open (in IPC)
- IPC had failed or the PCM has failed
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!
