Possible causes
– Faulty Intake Air Temperature Sensor
– Intake Air Temperature Sensor harness is open or shorted
– Intake Air Temperature Sensor circuit poor electrical connection
– Intake Air Temperature Sensor harness is open or shorted
– Intake Air Temperature Sensor circuit poor electrical connection
When is the obd code mean?
The P1111 code is set when the Powertrain Control Module (PCM) senses a signal voltage higher than the normal operating range of the sensor.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1111 CHEVROLET OBD Code Description