Q: The engine light is on and displaying a P1101 code on my code reader.

asked by on

Keep getting a P1101 code. I have done the factory fix of replacing valve cover thought it was the pcv valve but the CEL is still on have 20 lbs of vacuum in the crankcase could it be MAF

My car has 125000 miles.
My car has an automatic transmission.

Hi and thanks for contacting Your Mechanic. The code P1101 means that the mass airflow sensor (MAF) is out of self-test range. Check to see if the clamps to the sensor are tight. A slight leak of air around the sensor will make this code come up. Check the harness and see if the contacts are corrosion free. If everything looks good, then the MAF needs replaced. If you need further assistance with the mass airflow sensor replacement, then seek out a professional, such as one from Your Mechanic, to help you.

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. The engine light is on and displaying a P1101 code on my code reader.

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: when car is running, squeaking is coming from the right side of the car when idle

A quick diagnostic can be performed by simply taking all of the belt driven accessories out of the picture by disconnecting the drive belt(s) and then very briefly running the engine. If the sound disappears, the faulty component is then...

Q: CEL code P1101, Air intake system

Hi there. It may be time to find another repair facility. The P1101 code is the MAF (mass airflow) sensor is out of self-test range. This means the voltage parameters the PCM (powertrain control module)/computer expects to see for the...

Q: wont start in rain or cold weather have replaced most sensors spark plugs and wires distributer o2 sensors fuel control air contro

You should try to disconnect all modules and computers and put dielectric lube on all the connectors and seals to keep water and corrosion out of connections. Then see if that helps the issues.

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...