Troubleshooting P0171 Code and Performance Issues on Audi A4
Hello everyone, I own a 2008 Audi A4 with 322,000 km on it. Recently, I've been experiencing several issues: the check engine light is on, the engine feels unsteady, there's jerking during acceleration, shaking while idling, and poor fuel economy. I scanned the car and got a P0171 code. I've already replaced the lambda sensors, but the problems persist. What could be causing these issues? Any advice or suggestions would be greatly appreciated!
1 comment(s)
CarlyMechanic
Start by checking for any vacuum leaks in the intake system, as these can cause a P0171 code and lead to the symptoms you're experiencing. Inspect hoses and connections for cracks or disconnections. Let us know if you find anything or if you need further guidance!
CarlyMechanic
Start by checking for any vacuum leaks in the intake system, as these can cause a P0171 code and lead to the symptoms you're experiencing. Inspect hoses and connections for cracks or disconnections. Let us know if you find anything or if you need further guidance!