P009A – Intake Air Temperature/Ambient Air Temperature Correlation

P009A Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P009A Possible Causes

Faulty Intake Air Temperature (IAT) or Ambient Air Temperature (AAT) sensor,Biased IAT or AAT sensor

P009A Description

The P009A code indicates that the Intake Air Temperature (IAT) and Ambient Air Temperature (AAT) sensor readings differ by more than a calibrated value.