Skip the auto shop - Our mechanics make house calls

Q: Codes p0441 and p0089

asked by on

When im accelerating fast it kicks and doesnt want to go. And sometimes whenever i try to start the car it takes a while to go on. I just paid my mechaic 800 to fix it and its still messing up. I dont want to blow more money then i have to. What are some solutions i can do. Im a little mechanic savy

My car has 82200 miles.
My car has an automatic transmission.

A: Those faults are two totally separate issue...

Those faults are two totally separate issues. The P0441 is an evaporative emissions system fault, and the P0089 is a fuel pressure regulation fault. This generation of Audi A4 was notorious for high pressure fuel pump problems. There were multiple updates to the fuel pressure sensors for the low and high pressure systems, as well as problems with the camshaft follower that drives the high pressure fuel pump. They also had frequent problems with the in tank fuel pump, which delivers fuel to the high pressure pump. The evaporative emissions code could be as simple as a failed purge valve, which was also extremely common for these vehicles. The carbon canister starts to degrade and contaminates the purge valve, so the fix is to replace the canister and the purge valve together.

The fuel pressure faults are the most likely cause of the rough acceleration and hard starting, though both issues should be addressed to achieve proper performance. The purge valve is easy to replace, the canister is more difficult. Checking the fuel pressure system will require a capable scan tool, as well as a mechanical fuel pressure gauge and a knowledge of how the high pressure fuel system works. Working on these high pressure fuel systems is not advised unless you completely understand the operation and are very comfortable with them. I strongly suggest having a qualified professional, such as one from YourMechanic, diagnose the check engine light for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine surging on 2008 audi a4 Quattro

Hi There, What you are describing is a common problem with a dirty or faulty mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor....

Q: I have a 2006 Audi A3 2.0T I keep getting the code p0089 valve for fuel metering N290 implausible signal.What do i have to change?

To resolve diagnostic trouble code P0089, the mechanic would test the fuel pressure regulator, check for a clogged fuel filter or screen, check for restricted fuel lines, and test fuel pump output. Typically, the problem will be found in those...

Q: Possible issue with transmission

It sounds like your transmission may be having trouble building up enough oil pressure to engage the clutches while it is idling. The oil transmission oil pump runs off of the input shaft and runs at engine speed. When things...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...