ECT Sensor Circuit Intermittent High Voltage
2014-2014 Cadillac SRX 3.0L V6
The 2014 Cadillac SRX is equipped with a 3.0L V6 engine. Below you'll find detailed p1115 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
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
- Monitor ECT readings for erratic spikes
- Wiggle test ECT connector
- Test sensor resistance across temperature range
- Check connector terminals
Repair Notes
Clean and secure ECT connector. Replace sensor if faulty.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1115 on Other Vehicles
Common Questions
What does code P1115 mean on a 2014-2014 Cadillac SRX?
P1115 stands for "ECT Sensor Circuit Intermittent High Voltage". The PCM detected intermittent high voltage on the Engine Coolant Temperature sensor circuit, indicating the sensor is sporadically reporting very low temperatures.
What are the symptoms of P1115 on a Cadillac SRX?
Common symptoms of P1115 include: Check Engine Light, Rich running condition, Poor fuel economy, Cooling fans not activating when needed.
What causes P1115 on a 2014-2014 Cadillac SRX?
Common causes of P1115 include: Intermittent open in ECT circuit, Loose ECT connector, Faulty ECT sensor, Corroded terminals.
Last updated: March 2026