Engine-Codes - Cadillac - P1603 Cadillac

P1603 Cadillac Code - Loss Of Sensing Diagnostic Mode Data Conditions

- Code Popularity: 4,475 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P1603 Cadillac?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Sensing Diagnostic Module (SDM)
  • Sensing Diagnostic Module harness is open or shorted
  • Sensing Diagnostic Module circuit poor electrical connection
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How to Fix the DTC P1603 Cadillac?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1603 Cadillac code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1603 Cadillac Code Mean?

With the engine running engine speed over 500 rpm for 10 continuous seconds, the Powertrain Control Module (PCM) did not receive any Sensing Diagnostic Module (SDM) data or received invalid data during a 1 second period.

P1603 Cadillac Code - Loss Of Sensing Diagnostic Mode Data Conditions

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