P1112
IAT Sensor Circuit Intermittent Low Voltage
2019-2019 Buick Enclave 3.6L V6 🇬🇧
Low SeverityPowertrain
Description
The PCM detected intermittent low voltage on the Intake Air Temperature sensor circuit, indicating a sporadic short to ground.
Symptoms
- Check Engine Light (intermittent)
- Incorrect fueling calculations
- Intermittent performance issues
Common Causes
- Shorted IAT sensor wiring
- Faulty IAT sensor
- Water intrusion in connector
- Chafed wiring
Diagnostic Steps
- Wiggle test IAT connector
- Inspect wiring for shorts to ground
- Test IAT sensor resistance
- Check for water in connector
Repair Notes
Repair shorted wiring or replace IAT sensor.
Related Codes
P0110Intake Air Temperature (IAT) Sensor 1 CircuitP0112IAT Sensor 1 Circuit Low InputP1111IAT Sensor Circuit Intermittent High VoltageP1111IAT Sensor Circuit Intermittent High VoltageP1111Intake Air Temperature Sensor Circuit Low/IntermittentP1111IAT Sensor Circuit Intermittent High VoltageP1111IAT Sensor Circuit Intermittent High VoltageP1111IAT Sensor Circuit Intermittent High VoltageP1111Intake Air Temperature Sensor Circuit Low/IntermittentP1111IAT Sensor Circuit Intermittent High VoltageP1111IAT Sensor Circuit Intermittent High VoltageP1111Intake Air Temperature Sensor Circuit Low/IntermittentP1111IAT Sensor Circuit Intermittent High Voltage
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
P1112 on Other Vehicles
Common Questions
What does code P1112 mean on a 2019-2019 Buick Enclave?
P1112 stands for "IAT Sensor Circuit Intermittent Low Voltage". The PCM detected intermittent low voltage on the Intake Air Temperature sensor circuit, indicating a sporadic short to ground.
What are the symptoms of P1112 on a Buick Enclave?
Common symptoms of P1112 include: Check Engine Light (intermittent), Incorrect fueling calculations, Intermittent performance issues.
What causes P1112 on a 2019-2019 Buick Enclave?
Common causes of P1112 include: Shorted IAT sensor wiring, Faulty IAT sensor, Water intrusion in connector, Chafed wiring.