SQ5 TDI Power Loss & Jerking Due to Intake Issues

Had a similar issue with my 2012 A5 3.0 TDI last winter. Have some experience working on VAG engines, though mainly basic maintenance. The symptoms you describe match exactly what I experienced, reduced engine performance, rough running, and that characteristic hissing from the intake system. The engine light came on intermittently during acceleration. Took it to a workshop where they diagnosed a faulty flap control in the intake manifold. They initially thought the entire manifold needed replacement, but fortunately only the actuator was defective. Total repair came to 465 Euro including diagnostic time and parts. The fix completely restored normal engine performance and resolved the hissing. Fuel consumption returned to normal levels within a tank or two. Before suggesting specific solutions, could you share: Current mileage on your SQ5? Are you getting any specific error codes? Does the problem occur more when the engine is cold or warm? Have you had any recent work done on the air intake system? This information would help confirm if your issue matches what I experienced with my A5.

Had a similar issue with my 2012 A5 3.0 TDI last winter. Have some experience working on VAG engines, though mainly basic maintenance. The symptoms you describe match exactly what I experienced, reduced engine performance, rough running, and that characteristic hissing from the intake system. The engine light came on intermittently during acceleration. Took it to a workshop where they diagnosed a faulty flap control in the intake manifold. They initially thought the entire manifold needed replacement, but fortunately only the actuator was defective. Total repair came to 465 Euro including diagnostic time and parts. The fix completely restored normal engine performance and resolved the hissing. Fuel consumption returned to normal levels within a tank or two. Before suggesting specific solutions, could you share: Current mileage on your SQ5? Are you getting any specific error codes? Does the problem occur more when the engine is cold or warm? Have you had any recent work done on the air intake system? This information would help confirm if your issue matches what I experienced with my A5.

Had a similar issue with my 2012 A5 3.0 TDI last winter. Have some experience working on VAG engines, though mainly basic maintenance. The symptoms you describe match exactly what I experienced, reduced engine performance, rough running, and that characteristic hissing from the intake system. The engine light came on intermittently during acceleration. Took it to a workshop where they diagnosed a faulty flap control in the intake manifold. They initially thought the entire manifold needed replacement, but fortunately only the actuator was defective. Total repair came to 465 Euro including diagnostic time and parts. The fix completely restored normal engine performance and resolved the hissing. Fuel consumption returned to normal levels within a tank or two. Before suggesting specific solutions, could you share: Current mileage on your SQ5? Are you getting any specific error codes? Does the problem occur more when the engine is cold or warm? Have you had any recent work done on the air intake system? This information would help confirm if your issue matches what I experienced with my A5.

Had a similar issue with my 2012 A5 3.0 TDI last winter. Have some experience working on VAG engines, though mainly basic maintenance. The symptoms you describe match exactly what I experienced, reduced engine performance, rough running, and that characteristic hissing from the intake system. The engine light came on intermittently during acceleration. Took it to a workshop where they diagnosed a faulty flap control in the intake manifold. They initially thought the entire manifold needed replacement, but fortunately only the actuator was defective. Total repair came to 465 Euro including diagnostic time and parts. The fix completely restored normal engine performance and resolved the hissing. Fuel consumption returned to normal levels within a tank or two. Before suggesting specific solutions, could you share: Current mileage on your SQ5? Are you getting any specific error codes? Does the problem occur more when the engine is cold or warm? Have you had any recent work done on the air intake system? This information would help confirm if your issue matches what I experienced with my A5.

Had a similar issue with my 2012 A5 3.0 TDI last winter. Have some experience working on VAG engines, though mainly basic maintenance. The symptoms you describe match exactly what I experienced, reduced engine performance, rough running, and that characteristic hissing from the intake system. The engine light came on intermittently during acceleration. Took it to a workshop where they diagnosed a faulty flap control in the intake manifold. They initially thought the entire manifold needed replacement, but fortunately only the actuator was defective. Total repair came to 465 Euro including diagnostic time and parts. The fix completely restored normal engine performance and resolved the hissing. Fuel consumption returned to normal levels within a tank or two. Before suggesting specific solutions, could you share: Current mileage on your SQ5? Are you getting any specific error codes? Does the problem occur more when the engine is cold or warm? Have you had any recent work done on the air intake system? This information would help confirm if your issue matches what I experienced with my A5.

Last service was done at 165625 KM and mechanic found no intake system issues at that time. Currently getting P2015 error code after scanning, which confirms the intake manifold flap control malfunction suspicion. The engine misfire and reduced power happen mostly when the engine is already warm, especially during highway driving. The hissing sound is now constant during acceleration. Based on comments here, will try to get just the actuator replaced rather than the complete manifold to keep costs reasonable.

Last service was done at 165625 KM and mechanic found no intake system issues at that time. Currently getting P2015 error code after scanning, which confirms the intake manifold flap control malfunction suspicion. The engine misfire and reduced power happen mostly when the engine is already warm, especially during highway driving. The hissing sound is now constant during acceleration. Based on comments here, will try to get just the actuator replaced rather than the complete manifold to keep costs reasonable.

Last service was done at 165625 KM and mechanic found no intake system issues at that time. Currently getting P2015 error code after scanning, which confirms the intake manifold flap control malfunction suspicion. The engine misfire and reduced power happen mostly when the engine is already warm, especially during highway driving. The hissing sound is now constant during acceleration. Based on comments here, will try to get just the actuator replaced rather than the complete manifold to keep costs reasonable.

Last service was done at 165625 KM and mechanic found no intake system issues at that time. Currently getting P2015 error code after scanning, which confirms the intake manifold flap control malfunction suspicion. The engine misfire and reduced power happen mostly when the engine is already warm, especially during highway driving. The hissing sound is now constant during acceleration. Based on comments here, will try to get just the actuator replaced rather than the complete manifold to keep costs reasonable.

Last service was done at 165625 KM and mechanic found no intake system issues at that time. Currently getting P2015 error code after scanning, which confirms the intake manifold flap control malfunction suspicion. The engine misfire and reduced power happen mostly when the engine is already warm, especially during highway driving. The hissing sound is now constant during acceleration. Based on comments here, will try to get just the actuator replaced rather than the complete manifold to keep costs reasonable.

Thanks for the update. That P2015 code on your SQ5 definitely confirms the intake manifold flap control issue, exactly what my A5 showed before repair. The warm engine symptoms and constant hissing match my experience too. The actuator replacement worked perfectly in my case and has held up for over 30000km now with no engine performance issues returning. Just make sure the workshop properly calibrates the new actuator, some try to skip this step, but its crucial for optimal operation. My engine misfire issues completely disappeared after the fix. The repair also resolved the reduced power problem and eliminated that annoying hissing from the air intake system. Fuel consumption dropped back to normal within about 1000km of driving. One tip: while they have the intake manifold open, have them check the flap mechanism itself for carbon buildup. Mine needed a quick cleaning, which they did at no extra cost since they were already in there. Glad you are going the actuator-only route. The full manifold replacement would be overkill given these symptoms and that error code.

Thanks for the update. That P2015 code on your SQ5 definitely confirms the intake manifold flap control issue, exactly what my A5 showed before repair. The warm engine symptoms and constant hissing match my experience too. The actuator replacement worked perfectly in my case and has held up for over 30000km now with no engine performance issues returning. Just make sure the workshop properly calibrates the new actuator, some try to skip this step, but its crucial for optimal operation. My engine misfire issues completely disappeared after the fix. The repair also resolved the reduced power problem and eliminated that annoying hissing from the air intake system. Fuel consumption dropped back to normal within about 1000km of driving. One tip: while they have the intake manifold open, have them check the flap mechanism itself for carbon buildup. Mine needed a quick cleaning, which they did at no extra cost since they were already in there. Glad you are going the actuator-only route. The full manifold replacement would be overkill given these symptoms and that error code.

Thanks for the update. That P2015 code on your SQ5 definitely confirms the intake manifold flap control issue, exactly what my A5 showed before repair. The warm engine symptoms and constant hissing match my experience too. The actuator replacement worked perfectly in my case and has held up for over 30000km now with no engine performance issues returning. Just make sure the workshop properly calibrates the new actuator, some try to skip this step, but its crucial for optimal operation. My engine misfire issues completely disappeared after the fix. The repair also resolved the reduced power problem and eliminated that annoying hissing from the air intake system. Fuel consumption dropped back to normal within about 1000km of driving. One tip: while they have the intake manifold open, have them check the flap mechanism itself for carbon buildup. Mine needed a quick cleaning, which they did at no extra cost since they were already in there. Glad you are going the actuator-only route. The full manifold replacement would be overkill given these symptoms and that error code.

Thanks for the update. That P2015 code on your SQ5 definitely confirms the intake manifold flap control issue, exactly what my A5 showed before repair. The warm engine symptoms and constant hissing match my experience too. The actuator replacement worked perfectly in my case and has held up for over 30000km now with no engine performance issues returning. Just make sure the workshop properly calibrates the new actuator, some try to skip this step, but its crucial for optimal operation. My engine misfire issues completely disappeared after the fix. The repair also resolved the reduced power problem and eliminated that annoying hissing from the air intake system. Fuel consumption dropped back to normal within about 1000km of driving. One tip: while they have the intake manifold open, have them check the flap mechanism itself for carbon buildup. Mine needed a quick cleaning, which they did at no extra cost since they were already in there. Glad you are going the actuator-only route. The full manifold replacement would be overkill given these symptoms and that error code.

Thanks for the update. That P2015 code on your SQ5 definitely confirms the intake manifold flap control issue, exactly what my A5 showed before repair. The warm engine symptoms and constant hissing match my experience too. The actuator replacement worked perfectly in my case and has held up for over 30000km now with no engine performance issues returning. Just make sure the workshop properly calibrates the new actuator, some try to skip this step, but its crucial for optimal operation. My engine misfire issues completely disappeared after the fix. The repair also resolved the reduced power problem and eliminated that annoying hissing from the air intake system. Fuel consumption dropped back to normal within about 1000km of driving. One tip: while they have the intake manifold open, have them check the flap mechanism itself for carbon buildup. Mine needed a quick cleaning, which they did at no extra cost since they were already in there. Glad you are going the actuator-only route. The full manifold replacement would be overkill given these symptoms and that error code.

The actuator-only approach sounds promising. Based on my SQ5s symptoms and the P2015 code, it seems to be the same intake manifold flap control issue others have experienced. Good to hear the repair restored normal engine performance and resolved similar problems with hissing and reduced power in your case. Will schedule the actuator replacement next week and request they check for carbon buildup while accessing the intake system. The comprehensive fix including calibration should resolve both the engine misfire and fuel consumption issues. Given the similarities in symptoms and error codes between our cases, feeling more confident about skipping the complete manifold replacement. Will update the thread once the repair is done to confirm if it resolves all the issues. Thanks for the detailed feedback on your experience, really helpful for confirming the diagnosis and expected repair approach.

The actuator-only approach sounds promising. Based on my SQ5s symptoms and the P2015 code, it seems to be the same intake manifold flap control issue others have experienced. Good to hear the repair restored normal engine performance and resolved similar problems with hissing and reduced power in your case. Will schedule the actuator replacement next week and request they check for carbon buildup while accessing the intake system. The comprehensive fix including calibration should resolve both the engine misfire and fuel consumption issues. Given the similarities in symptoms and error codes between our cases, feeling more confident about skipping the complete manifold replacement. Will update the thread once the repair is done to confirm if it resolves all the issues. Thanks for the detailed feedback on your experience, really helpful for confirming the diagnosis and expected repair approach.

The actuator-only approach sounds promising. Based on my SQ5s symptoms and the P2015 code, it seems to be the same intake manifold flap control issue others have experienced. Good to hear the repair restored normal engine performance and resolved similar problems with hissing and reduced power in your case. Will schedule the actuator replacement next week and request they check for carbon buildup while accessing the intake system. The comprehensive fix including calibration should resolve both the engine misfire and fuel consumption issues. Given the similarities in symptoms and error codes between our cases, feeling more confident about skipping the complete manifold replacement. Will update the thread once the repair is done to confirm if it resolves all the issues. Thanks for the detailed feedback on your experience, really helpful for confirming the diagnosis and expected repair approach.

The actuator-only approach sounds promising. Based on my SQ5s symptoms and the P2015 code, it seems to be the same intake manifold flap control issue others have experienced. Good to hear the repair restored normal engine performance and resolved similar problems with hissing and reduced power in your case. Will schedule the actuator replacement next week and request they check for carbon buildup while accessing the intake system. The comprehensive fix including calibration should resolve both the engine misfire and fuel consumption issues. Given the similarities in symptoms and error codes between our cases, feeling more confident about skipping the complete manifold replacement. Will update the thread once the repair is done to confirm if it resolves all the issues. Thanks for the detailed feedback on your experience, really helpful for confirming the diagnosis and expected repair approach.

The actuator-only approach sounds promising. Based on my SQ5s symptoms and the P2015 code, it seems to be the same intake manifold flap control issue others have experienced. Good to hear the repair restored normal engine performance and resolved similar problems with hissing and reduced power in your case. Will schedule the actuator replacement next week and request they check for carbon buildup while accessing the intake system. The comprehensive fix including calibration should resolve both the engine misfire and fuel consumption issues. Given the similarities in symptoms and error codes between our cases, feeling more confident about skipping the complete manifold replacement. Will update the thread once the repair is done to confirm if it resolves all the issues. Thanks for the detailed feedback on your experience, really helpful for confirming the diagnosis and expected repair approach.