I also noticed the coolant temp gauge kept fluctuating between. After some online research, i suspected a problem with the maf sensor Seems to me like either the thermostat i just installed has already failed, or that my one coolant temperature sensor has failed
Causes and Fixes P2181 Code: Cooling System Performance - YouTube
Since i was getting the code with both the old and the new.
When a check engine light stays on after replacing the maf sensor, it’s time to seek professional help
A qualified mechanic can perform a thorough. You may experience some problems relating to a bad maf sensor, even after you just changed the sensor These problems occur due to a number of. Learn what triggers the p2181 code, how to diagnose cooling system issues, and what steps to take to safely fix overheating or overcooling problems.
I had no check engine light for a few days while i had it and then it had popped. I have had a coolant leak and a p2181 code recently Checked the leak, coming from water pump No problem, i replaced the water pump and thermostat last weekend
New maf sensor in most modern vehicles replacing the mass airflow sensor is not technically difficult, but as with anything, if you are not sure, hire a professional to.
If you have replaced a maf (mass air flow) sensor and the engine light stays on, or the code comes back, here are the other things that can cause maf sensor codes *be sure to clear code with scan. Replacing audi 3.2 fsi v6 faulty temperature sensor My audi started sputtering the other day, and the check engine light came on
