TT Quattro Coupe V6-3.2L (CBRA) (2008)
Air Injection Filter: Customer Interest
Emissions - MIL ON/DTC P1424/P1414/P0491/P0492
26 08 05
2015895/2
November 19, 2008.
Supersedes Technical Service Bulletin Group 26 number 07-03 dated August 10, 2007 for reasons listed below.
Affected Vehicles
01 MIL on (DTCs for secondary air system)
Condition
-
Malfunction Indicator Light (MIL) on.
-
One or more of the following DTCs are stored:
-
DTC P1424 (Secondary Air Injection System, Bank 1, Leak Detected Sporadic )
-
DTC P1414 (Secondary Air Injection System, Bank 2, Leak Detected Sporadic )
-
DTC P0491 (Secondary Air Injection System, Bank 1, Low Flow)
-
DTC P0492 (Secondary Air Injection System, Bank 2, Low Flow)
Technical Background
The check-valve ball inside the air filter housing (Figure 1, 2) of the secondary air injection pump -V101- (Figure 1, 1) may sporadically interrupt the
secondary air flow when operating and driven on poor roads and store DTCs
Production Solution
Check valve ball removed during vehicle production designated by a green dot on the filter housing.