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2007 CADILLAC ESCALADE
6.2L V8•4WD•AUTOMATIC•gas
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor983Torque6748Fluid18DTC2336Battery2Maintenance0Recalls4
P1115moderate severityPowertrain

ECT Sensor Circuit Intermittent High Voltage

on 2007 Cadillac Escalade 6.2L V8 · 4WD

What this code means

The PCM detected intermittent high voltage on the Engine Coolant Temperature sensor circuit, indicating the sensor is sporadically reporting very low temperatures.

Symptoms

  • Check Engine Light
  • Rich running condition
  • Poor fuel economy
  • Cooling fans not activating when needed

Common causes

  • Intermittent open in ECT circuit
  • Loose ECT connector
  • Faulty ECT sensor
  • Corroded terminals

Diagnostic steps

  1. Monitor ECT readings for erratic spikes
  2. Wiggle test ECT connector
  3. Test sensor resistance across temperature range
  4. Check connector terminals

Repair notes

Clean and secure ECT connector. Replace sensor if faulty.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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