Code P0299 turbocharger underboost condition

5

Asked by Sep 08, 2019 at 05:27 AM about the 2012 Audi A4 2.0T quattro Premium Plus Sedan AWD

Question type: Maintenance & Repair

Code is P0299, an underboost condition. i have a freeze frame for the code
if it will help. The air filter has been changed and I couldn't find any leaks in
the intake system. Any ideas?

Freeze Frame
-P0299: Turbocharger/Supercharger "A" Underboost Condition (Powertrain,
Generic)

-Fuel system status: Fuel system A: Closed loop (1)
-Fuel system status: Fuel system B: NA
-Calculated engine load: 65.1 %
-Engine Coolant Temperature: 204 °F
-Short Term Fuel Trim - Bank 1: -3.9 %
-Long Term Fuel Trim - Bank 1: 7.8 %
-Engine RPM: 2988 RPM
-Vehicle Speed Sensor: 60 mph
-Ignition Timing Advance for #1 Cylinder: 7.5
-Intake Air Temperature: 116 °F
-Air Flow Rate from Mass Flow Sensor: 9.4 lb/min
-Absolute Throttle Position: 88.2 %
-Time Since Engine Start: 10 min 40 s
-Fuel Rail Pressure: 2187.2 PSI
-Commanded Evaporative Purge: 98.4 %
-Barometric Pressure: 24.8 inHg
-Control module voltage: 13.85 V
-Absolute Load Value: 120.4 %
-Fuel/Air Commanded Equivalence Ratio: 1.000
-Relative Throttle Position: 78.0 %

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