Audi A4 Avant: Check engine light, engine failure and misfiring

The intermittent drive system malfunction could indeed be due to a variety of issues. However, before you consider a dealer intervention, you could try using an OBD2 scanner tool to read the fault codes. This should give you a more specific idea of what's causing the problem. Once you have the fault codes, you can look them up to understand the issue better. Please share the fault codes here if you need further assistance.

Hello, I have an Audi A4 Avant, 2016, and 145,235 kms are done. I am facing check engine light issue. Can you please help me with a solution?

The check engine light can be triggered by a variety of issues, ranging from a loose gas cap to a serious engine problem. The first step would be to use an OBD2 scanner to read the fault codes. These codes will give you a better idea of what's causing the light to come on. Once you have these codes, you can look them up or share them here for further assistance. Remember, if the light is flashing, it indicates a more serious issue and you should get your car checked by a professional as soon as possible.

Bonjour.jai changer la distribution de mon audi a3 1.8 tfsi de 2008.et j'ai changé la pompe haute préssion aussi.elle démarit bien ,je la laisse tournée 5 min puis au troisième coup d'accélérateur la voiture retomber mal au ralentis puis tourne comme une patate ,énorme vibration,limite de calé. After checking the fault codes are 00017, and ignition cylinder 1,3,4. I checked the distri 10 times. But the code 00017 puts me in doubt. Thanks for your feedback

(Translated from French)

Bonjour David21, The fault code 00017 usually indicates a problem with the control module. However, since you're also getting ignition cylinder errors, it's possible that there's an issue with the ignition coils or spark plugs. I would suggest checking these components first. If they appear to be in good condition, you may need to have the control module checked by a professional. Please keep us updated on your progress.

Hi i keep getting misfires on cil1 sometimes it also happens on cil3. I already changed sparkplugs and i swapped all the coil plugs position. On top of that i also changed the low pressure injector of cil1. I don’t really know what to do right now. So any help or thoughts would be appreciated, Thanks!

Hi Kenji, Misfires can be caused by a variety of issues. Since you've already checked the spark plugs, coils, and injectors, the next step might be to check the fuel system. A clogged fuel filter or a failing fuel pump can cause misfires. If the fuel system is fine, you might want to check the compression in the cylinders. A compression test can help identify any issues with the engine's valves, piston rings, or cylinder walls. Please keep us updated on your findings.

Hi, I urgently need help with my Audi A4 B8 (built in 2008, 1.8 TFSI). I'm really desperate and hope someone has some advice. The problem: My car displays the error codes P227900 (air intake system leak) and P017100 (fuel equipment, bank 1 - fuel too lean). In addition, the check engine light is illuminated and the engine jerks from time to time. What I have already done: 1. replaced the following parts: - Lambda sensor - Mass air flow sensor - temperature sensor - Crankcase ventilation 2. further steps: - I sprayed all the relevant points with brake cleaner to find a leak. - At the same time, I monitored the lambda sensor values in the readout device. Observation: The lambda sensor always equalizes the value to around 6.54 in the long term. I no longer know what to do. Does anyone have any ideas as to what else it could be or what I should check? Any help would be great!

(Translated from German)

Hi Simon, Given the error codes you've mentioned, it seems like there might be an air leak somewhere in the intake system that's causing the fuel mixture to be too lean. Since you've already replaced several parts and checked for leaks, the next step might be to check the fuel pressure. A failing fuel pump or a clogged fuel filter can cause a lean fuel mixture. If the fuel system is fine, you might want to consider having a smoke test done on the intake system to find any hard-to-detect leaks. Please keep us updated on your progress.