Back to 2014 Cadillac SRX

2014 CADILLAC SRX

3.0L V6AWDAUTOMATICgas
2 active safety recalls on this vehicle — view recalls
Repairs0Labor515Torque4985Fluid9DTC955Battery0Maintenance0Recalls2
P1633high severityPowertrain

Ignition Supply Power Circuit Low Voltage

on 2014 Cadillac SRX 3.0L V6 · AWD

What this code means

The PCM detected low voltage on its ignition supply power circuit. The ignition power circuit provides run/start voltage to the PCM.

Symptoms

  • Check Engine Light
  • Engine stalling
  • Poor performance
  • Intermittent no-start
  • Multiple erratic codes

Common causes

  • Faulty ignition switch
  • Loose ignition power connection
  • Blown fuse
  • Damaged wiring
  • Corroded ignition switch connector

Diagnostic steps

  1. Test voltage at PCM ignition power circuit
  2. Check ignition switch output
  3. Inspect ignition power fuse
  4. Test wiring for resistance
  5. Check connector at ignition switch

Repair notes

Check ignition switch, fuse, and wiring. Replace ignition switch if voltage output is low.

Other Powertrain codes on this vehicle

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