Service bulletins for the 2002 Audi A4
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
149 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Crankcase ventilation (PCV) are shown. Show all
| TSB-CL-JM-10C3 | 2010-01-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CUSTOMER LETTER EXAMPLE (CANADA). CRANKCASE BREATHER HOSE ON SOME VEHICLES MAY DETERIORATE OVER TIME AND BECOME CRACKED OR BROKEN. IF THIS HAPPENS, CRANKCASE EMISSIONS CAN BE RELEASED INTO THE ATMOSPHERE, OIL LEAKAGE OR ENGINE STARTING PROBLEMS MAY OCCUR, OR THE MIL LIGHT MAY ILLUMINATE. A NEW CRANKCASE BREATHER HOSE WILL BE INSTALL FREE OF CHARGE. CUSTOMER LETTER EXAMPLE (CANADA). CSC LETTER WAS REC'D. *PE CUSTOMER LETTER EXAMPE (UNITED STATES). UPDATED 3/26/10. *PE |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.