Discovery II
EMISSION CONTROL - V8
17-2-30 DESCRIPTION AND OPERATION
If the SAI vacuum solenoid valve malfunctions, the following fault codes may be stored in the ECM diagnostic
memory, which can be retrieved using TestBook/T4:
NOTE: Refer to 'SAI System Fault Finding' and 'Checking Malfunctions on SAI System' at the end of this section to
determine root cause of fault codes.
As a result of the SAI vacuum solenoid malfunction, other fault codes may also be stored in the ECM diagnostic
memory. These may include the following:
NOTE: A malfunction of the valve is logically expected to result in both engine banks reporting the same fault.
NOTE: Refer to 'SAI System Fault Finding' and 'Checking Malfunctions on SAI System' at the end of this section to
determine root cause of fault codes.
P-code
Description
P0412
SAI vacuum solenoid valve powerstage fault - harness damage, short circuit to
battery supply voltage
P0413
SAI vacuum solenoid valve not connected, open circuit
P0414
SAI vacuum solenoid valve short circuit to ground
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)
