SureTrack Real Fix: Smoking out the Cracks

Real Fixes from the SureTrackĀ® expert information resource are documented issues from actual shop repair orders and community discussions. Read on to see how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is currently available free with the purchase of a current Snap-onĀ® diagnostic software version.

A crack in your charge air cooler will definitely be a problem for driveability. Follow this real fix to see how cracks in the charge air cooler caused a code P2279.

2012 Audi A3 1.6 Diesel

P2279, P2359, Replaced Charge Air Cooler

The customer states the check engine light is on.

Confirmed customer complaint, engine management light was illuminated. Connected a scan tool and found code P2279 – Intake Air System Leak and P2359 – Boost Pressure Too High/Low. Performed a visual inspection of the air filter and the air filter housing and found the air filter was clean and observed no evidence of any damage. Performed a visual inspection of the turbocharger air tube and charge air cooler, but found no obvious faults. Using a smoke machine, induced smoke into the turbocharger induction system to check for leaks and found smoke emitted from the charge air cooler. Further inspection of the charge air cooler revealed signs of cracking. The results of these tests verified the charge air cooler was faulty.

Replaced the charge air cooler, cleared codes, performed a road test and verified the vehicle operated properly. The check engine light did not illuminate and no fault codes returned.

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About the Author

Nick Taylor

Nick Taylor is the SureTrack Community Administrator and a Senior Applications Specialist at Mitchell 1 with over 25 years of experience with electronic repair data systems. Nick previously worked in the automotive dismantling and engine rebuilding industries.