Any ideas I would greatly appreciate it. That allowed outside air to enter the tank as you used up the gas inside the tank. Turn ignition on and wait 30 seconds. Regardless of the check engine light, the entire time the car has driven normally. Or if you just put a fuel pump in it. As for canister, no relation to your code.
Do we pressureize the system and look for leaks? I read that if this solenoid gets gummed up it can stick open or close. What you guys think I should check first? Remove the battery and tray, and you'll see three connection points coming off the negative battery cable. Not sure what the Autozone guy was telling you, all the low voltage means is that there's a leak. H2O, go to next step. Still I had no luck with clearing the code. Okay to have an ethanol plant killing everyone that lives near it, but light a candle, and they are screaming at you.
If engine does not start, ensure procedure was properly followed. If not, do so and if you did follow this test procedure. When the vehicle is parked, one valve opens permitting gas tank pressure to release through the charcoal canister, have to do that or else with the heat of the day, the tank would explode due to fume expansion. Check and make sure you don't also have a P1639, this would indicate that the 5v ref is shorted to ground or power and would need to be traced down 1st before diag'ing the P0452. If fuel tank pressure sensor value is not within -1. If you've already made it to the store, you might as well just replace it.
And the two times it popped up was on very cold damp days. He only remembers the fuel pump connector been removed and plugged in back. If scan tool indicates that this test ran and passed, go to next step. Disconnect the sensor and inspect the pins in the terminal to ensure they are clean and moisture free. Now don't ask yourself; What should you do with P0452 code? Make sure you clean the small wire too, because it's the main ground for the dash instruments. I have no idea were the charchol tank is at, i dont see it under the hood anywere.
But that is the way our government is, picking on the insignificant stuff. Man, Thanks so much to everyone. I need to make sure I have it wired properly? On a side note, before every other oil change for the pass 2 years I run a bottle of Techron fuel cleaner in the tank. Took a tour of the place, but felt like I was in a prison. I eventually figured out that the gas cap was faulty. The new sensor is built into the evap canister bracket. If the sensor was reading high voltage and that disappears when the sensor is unplugged, check for proper ground and ensure you have 5-volt reference voltage.
I didn't know that oil saturation could short a circuit. After engine has stalled, leave ignition on for 10 minutes. Did not help me at all. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. If not, then the wiring from the sensor must be checked to ensure there is no communication error, before replacing the pressure sensor.
Check for short to ground in 5-volt reference circuit. Check fuel tank pressure sensor for water intrusion, backed out terminal, improper terminal mating or poor terminal-to-wire connections. What are the common causes of code P0452? If voltage reading is not 1. You may have to remove loom or electrical tape to inspect the wiring. If the voltage spikes or drops off while you are wiggling a section of wire, you likely have a break in the wire that needs to be repaired. Using scan tool, monitor fuel tank pressure sensor reading.
The fuel tank tends to build fuel vapor pressure when the temperatures are high and a vacuum, when under a load. However there is alot of air in the fuel line. The code sets if the signal goes below a predetermined value. Common mistakes when diagnosing the P0452 code The most common mistake is replacing the pressure sensor when the problem simply was the fuel cap was not tight enough. The information supplied by the fuel tank pressure sensor to the Engine Control Module is used in order to detect vacuum decay or an excessive vacuum during the diagnostic routine. I know nothing compared to you guys. If you do decide to cut it, make sure you do a good job of hooking it back up, solder it, shrink wrap it and seal it the best you can.