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2012 CADILLAC ESCALADE

6.2L V8•4WD•AUTOMATIC•gas
3 active safety recalls on this vehicle — view recalls
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Repairs0Labor1128Torque7403Fluid16DTC1904Battery0Maintenance0Recalls3
P2138critical severityPowertrain

Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation

on 2012 Cadillac Escalade 6.2L V8 · 4WD

What this code means

The dual accelerator pedal position sensors report conflicting values.

Symptoms

  • Limp mode
  • No throttle response
  • Check engine light
  • Engine at idle only

Common causes

  • Failed APP sensor
  • Corroded pedal connector
  • Wiring fault
  • 5V reference issue

Diagnostic steps

  1. Check APP sensor D and E voltages
  2. Verify 5V reference
  3. Inspect pedal connector

Repair notes

Replace accelerator pedal assembly. Check shared 5V reference circuit.

Other Powertrain codes on this vehicle

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