P1112low severityPowertrain
IAT Sensor Circuit Intermittent Low Voltage
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1