P1145 OBD Code Definition:
P1145 Mass Air Flow Sensor Short To Positive
P1145 OBD Code Description:

Possible Symptoms

• Engine Light ON (or Service Engine Soon Warning Light)
• Excessive smoke from Exhaust
• Reduced Engine Output

Possible Causes

• Fuse or Wiring Harness Issue
• Faulty Mass Air Flow (MAF) Sensor
• Mass Air Flow Sensor harness is open or shorted
• Mass Air Flow Sensor circuit poor electrical connection

Possible Solutions

• Check Fuses and Wiring Harness, see Factory Repair Manual
• Replace Mass Air Flow Sensor