P1415 CHEVROLET – Secondary Air Injection System Bank 1

P1415 CHEVROLET Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1415 CHEVROLET Possible Causes

Faulty Secondary Air Injection (AIR) pump,Secondary Air Injection check valve bank 1,Secondary Air Injection (AIR) pump electrical circuit fault,Blocked Secondary Air Injection (AIR) system

P1415 CHEVROLET Description

A Secondary Air Injection (AIR) pump is used on this vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) supplies a ground to the AIR pump relay, which energizes the AIR pump. The PCM monitors the HO2S voltages to diagnose the AIR system. During the AIR test, the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.