Discovery II
EMISSION CONTROL - V8
17-2-32 DESCRIPTION AND OPERATION
NOTE: Refer to 'SAI System Fault Finding' and 'Checking Malfunctions on SAI System' at the end of the 'Secondary
Air Injection System Operation' section to determine root cause of fault codes.
The system diagnostics monitor the whole SAI system for correct operation. Malfunction of any one of the SAI
components can cause the above fault codes to be stored.
Therefore, correct fault finding methods and investigation are essential to determine the root cause of the fault
code(s). TestBook/T4 must be used to perform active SAI diagnostics.
P-code
Description
P1412
Secondary Air Injection System – Malfunction Bank 1 LH (Insufficient SAI flow
during passive test)
P1413
Secondary Air Injection System – Air control valve always open Bank 1 LH
(Excessive SAI flow during active leak test)
P1414
Secondary Air Injection System – Malfunction Bank 1 LH (Insufficient SAI flow
during passive test)
P1415
Secondary Air Injection System – Malfunction Bank 2 RH (Insufficient SAI flow
during passive test)
P1416
Secondary Air Injection System – Ait control valve always open Bank 2 RH
(Excessive SAI flow during active leak test)
P1417
Secondary Air Injection System – Low air flow Bank 2 RH (Insufficient SAI flow
during active test)
