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Home/DTC Codes/Buick/Enclave/2019-2019 3.6L V6/P1114
P1114

ECT Sensor Circuit Intermittent Low Voltage

2019-2019 Buick Enclave 3.6L V6

Moderate SeverityPowertrain

The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed p1114 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

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

Symptoms

  • Check Engine Light
  • Intermittent cooling fan operation
  • Incorrect temperature gauge readings
  • Erratic idle

Common Causes

  • Intermittent short in ECT sensor wiring
  • Faulty ECT sensor
  • Corroded connector
  • Water intrusion

Diagnostic Steps

  1. Monitor ECT readings for erratic behavior
  2. Wiggle test ECT connector
  3. Test sensor resistance
  4. Inspect wiring for shorts

Repair Notes

Replace ECT sensor or repair wiring as needed.

Related Codes

P0115Engine Coolant Temperature (ECT) Sensor 1 CircuitP0116ECT Sensor 1 Circuit Range/PerformanceP0117ECT Sensor 1 Circuit Low InputP0118ECT Sensor 1 Circuit High InputP1115General Engine PerformanceP1115General Engine PerformanceP1115ECT Sensor Circuit Intermittent High VoltageP1115ECT Sensor Circuit Intermittent High VoltageP1115ECT Sensor Circuit Intermittent High VoltageP1115General Engine PerformanceP1115ECT Sensor Circuit Intermittent High VoltageP1115ECT Sensor Circuit Intermittent High VoltageP1115ECT Sensor Circuit Intermittent High VoltageP1115ECT Sensor Circuit Intermittent High VoltageP1115ECT Sensor Circuit Intermittent High VoltageP1115General Engine Performance

Other Powertrain Codes

P1114 on Other Vehicles

Buick Century

1996-1996 2.5L I4

Buick Century

1996-1996 3.3L V6

Buick Century

1997-1997 3.1L V6

Buick Century

1998-1998 3.1L V6

Buick Century

1999-1999 3.1L V6

Buick Century

2000-2000 3.1L V6

Buick Century

2001-2001 3.1L V6

Buick Century

2002-2002 3.1L V6

Common Questions

What does code P1114 mean on a 2019-2019 Buick Enclave?

P1114 stands for "ECT Sensor Circuit Intermittent Low Voltage". The PCM detected intermittent low voltage on the Engine Coolant Temperature sensor circuit, indicating the sensor is sporadically reporting very high temperatures.

What are the symptoms of P1114 on a Buick Enclave?

Common symptoms of P1114 include: Check Engine Light, Intermittent cooling fan operation, Incorrect temperature gauge readings, Erratic idle.

What causes P1114 on a 2019-2019 Buick Enclave?

Common causes of P1114 include: Intermittent short in ECT sensor wiring, Faulty ECT sensor, Corroded connector, Water intrusion.

Last updated: March 2026

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