Q: getting p2181 even after changing the CTS 2007 Audi A4

asked by on

I have replaced the CTS but its still says p2181 . The temperature gauge in the instrument panel always never reaches the normal ( center) its always way to the normal ( 70s). Coolant level is fine. There is no leakage anywhere. Heater blows heat withint 5-10 minutes , but its not that hot.

Can it be anything other than the Thermostat

My car has 93000 miles.
My car has an automatic transmission.

Hi there - the problem is a failing thermostat. On this Audi, engine management has a "warm-up" profile it expects the thermostat to manage while the engine comes up to temperature. The fact that yours is not reaching correct operating temp (center of the gauge) triggers the P2181. Replacing the thermostat is "the fix". I would recommend a thermostat replacement by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. getting p2181 even after changing the CTS 2007 Audi A4

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: Fuel System?

A whirring noise is actually a common symptom of a failing fuel pump. You can rule the power steering pump in or out just by disconnecting power steering belt. Obviously, if the noise remains the same with pump disconnected, then...

Q: Car won't start 2006 Audi

Trying to fix a car by replacing parts until it works again can get very expensive. When you have a plethora of codes like that, it's best to clear them,then try to start the car and see what comes back...

Q: Serpentine belt snapped truck won't turn over

The belt most likely broke from a seized pulley. Turn each of the components and pulleys to see if one is binding, wobbles or does not turn without making noise. You will need to find the cause of the belt...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...