P0452 code- Need Help
Thread Starter
Instructor
Joined: Jun 2012
Posts: 189
Likes: 1
From: DFW TX
P0452 code- Need Help
I have a 2004 A4 that is due for inspection. The SES light is on and I'm getting: P0452 Fuel Tank Pressure Sensor Circuit Low Voltage
in searching this code all say to replace gas cap.
I cleared the code and replaced the gas cap and drove.
Still getting the code. What could the cause be?
in searching this code all say to replace gas cap.
I cleared the code and replaced the gas cap and drove.
Still getting the code. What could the cause be?
Thread Starter
Instructor
Joined: Jun 2012
Posts: 189
Likes: 1
From: DFW TX
No one else has dealt with this? I thought it would be the gas cap since the one on there was old and didn't seem to really lock in. I replaced it with a new one but still have the code.
Racer
Joined: Sep 2007
Posts: 320
Likes: 28
emissions trouble shooting is difficult without the proper tools. if nothing is visually broken, its gonna turn into replacing one thing at a time until its fixed.
with the right tools i would pressurize your evap system with smoke and find the leak. if no leaks, replace the pressure sensor.
with the right tools i would pressurize your evap system with smoke and find the leak. if no leaks, replace the pressure sensor.
Instructor
Joined: Sep 2010
Posts: 125
Likes: 15
From: Brighton TN
I have a 2004 A4 that is due for inspection. The SES light is on and I'm getting: P0452 Fuel Tank Pressure Sensor Circuit Low Voltage
in searching this code all say to replace gas cap.
I cleared the code and replaced the gas cap and drove.
Still getting the code. What could the cause be?
in searching this code all say to replace gas cap.
I cleared the code and replaced the gas cap and drove.
Still getting the code. What could the cause be?
What did you find to be the issue? I have the same code.
