Fuel System - MIL ON, DTC P0299, Excessive Wastegate Play
21 MIL on - P0299 Negative pressure deviation, turbocharger excessive wastegate play
21 13 13
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April 4, 2013
Supersedes Technical DIAGNOSIS AND REPAIR Group 21 number 13-12 dated April 1, 2013 for reasons listed below.
Vehicle Information
Condition
BOTH of the following apply:
^ MIL on, DTC P0299 (Negative Pressure Deviation) is stored.
^ Turbocharger waste gate flap has play.
Technical Background
Under certain driving conditions, the linkage for the waste gate actuation can encounter excessive wear which leads to play at the waste gate flap.
This leads to boost escaping through a loose flap, which sets DTC P0299 (Negative Pressure Deviation).
Production Solution
Not applicable.
Service
1. Remove turbocharger as per ELSA instructions: Repair Manual >> Engine/Engine Mechanical >> 21 Turbocharger G-Charger >> Removal and
Installation >> Turbocharger
Audi A4 Quattro Sedan (8K2) L4-2.0L Turbo (CAEB) Page 717
2. Install clip 06J145220B on a replacement turbocharger's link plate and actuating rod joint as illustrated (Figures 1 and 2).
Tip:
^ The spring clip must not be overstretched. The maximum opening of the spring clip is 14 mm (Figure 3,1).
^ The spring clip must be replaced after every removal.
Audi A4 Quattro Sedan (8K2) L4-2.0L Turbo (CAEB) Page 718
3. After fitting the spring clip, check for correct fit (Figure 4).
4. After fitting the spring clip, check the position of the original circlip (Figure 5, 2) and correct it if necessary.
5. Install the new turbocharger as per Repair Manual >> Engine >> Engine Mechanical >> 21 Turbocharger, G-Charger >> Removal and
Installation >> Turbocharger.
Note:
Do not install clip on a used or pre-damaged turbocharger, as the same level of improvement as on a new part is not achieved.
Audi A4 Quattro Sedan (8K2) L4-2.0L Turbo (CAEB) Page 719
Warranty
Required Parts and Tools
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
