Cadillac P1603: Loss Of Sensing Diagnostic Mode Data
Is your scanner showing Cadillac P1603?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1603: Loss Of Sensing Diagnostic Mode Data
OVERVIEWWhat Does The Cadillac P1603 Code Mean?
Engine started with the engine speed over 500 rpm for 10 seconds, and the PCM did not detect any Sensing Diagnostic Mode (SDM) data or it received invalid SDM data for a one second period during the CCM test.
What Are The Potential Causes Of The Cadillac P1603 Code?
- Check the serial data circuit for a poor connection at the SIR
- Perform the SIR System Check
- Perform the Powertrain Onboard Diagnostic System Check
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> GM Genuine Parts 12633238 Engine Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
