DTC EFI-442

4-4-2 PULSED SECONDARY AIR INJECTION SYSTEM FLOW FAULT





Trouble Code Conditions
- The pulsed secondary air injection system (PAIR) is checked by disabling the long-term fuel trim and stopping canister purge (CP) valve control. The engine control module (ECM) then checks the short-term fuel trim integrator, if it is at maximum diagnostic trouble code (DTC) EFI-442 Pulsed secondary air injection system will be stored.

Substitute value(s)
- Fuel trim disabled.

Possible source(s)
- This diagnostic trouble code is always stored together with EFI-446 Pulsed Secondary Air Injection Leakage Fault or EFI-448 Pulsed Secondary Air Injection Pump Flow Fault.
- For further information about fault causes See:

^ Code EFI-446 Pulsed Secondary Air Injection Leakage Fault.

^ Code EFI-448 Pulsed Secondary Air Injection Pump Flow Fault.

Fault symptom(s)
- You can hear the Pulsed Secondary Air Injection System Pump operating continuously.





Status Messages
- Select one of the following options to continue:

Alternative 1:
If Status Message contains a "Leakage" Fault, See:

^ Code EFI-446 Pulsed Secondary Air Injection Leakage Fault.

Alternative 2:
If Status Message contains is a "Flow Too Low" Fault See:

^ Code EFI-448 Pulsed Secondary Air Injection Pump Flow Fault.