My cousin removed the tank to change fuel pump and he is getting ow P0452 code. Disconnect the negative terminal on the battery for a couple of minutes, then reconnect. Perfect recipe for stripped bolts, and yet more expensive repairs. In this case, it's telling you that it's not. I guess thats causing the fuel gage to not work. Thats for a fuel tank pressure sensor. They are easy to replace but hard on the pocket.
Purge Valve — removed from car and applied voltage to test valve open close operation while applying vacuum — Valve opens. I kept thinking it had to do with the opening of the fuel tank. I was hoping that some one had had this problem or a dealership person had seen this before. Did you find and correct the condition? When I parked it last night it had a half tank of fuel. If still no light, it's the connector that is bad. I pulled the code and it came up P0452.
While this may be caused by a loose or worn gas cap, as is often the case, it usually points to 1 of 2 other problems. After cranking 2 times, fired right up. Because my car was running fine except for the P0301 code I assumed it couldn't be this, and I read on. Note: Circuit Low Input codes are often the result of low battery voltages that can have many possible causes , bad connections across electrical connectors or previously repaired wiring, as well as corrosion in electrical connectors. Sprayed starter fuel into intake and it would start then die when starter fuel ran out. I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. Before someone brings it up, I have an extra cluster that I know the fuel gage works.
That code will flash whenever the diagnostic terminal is grounded with the ignition turned on and engine is not running. Drove same distance never tromping on throttle. Is the Fuel Tank Pressure sensor voltage near the specified value? Did you find and repair the condition? Refer to in Wiring Systems. Shops use a special low pressure smoke machine with nitrogen to pressurize the system and find leaks. The Fuel Tank Pressure sensor signal varies between ground and 5.
What do the experts say. The pressure sensor is mounted on the pump unit. The pump has to come out to replace the sending unit. The evaporative emissions system is designed to prevent raw gas vapors from entering the atmosphere. Refer to in Wiring Systems. Trace the wiring from the sensor back to determine if there are any breaks swollen spots on the wiring insulation that can indicate corrosion inside the wire.
They don't stand up well to stress. P0452 hasn't reappeared as yet, but rest assured it will as i have done this a few times already over past year. Does the scan tool indicate that this test ran and passed? Whether the mechanical part of the valve opened and closed properly or sealed properly is an entirely different question. Bank one is the side with cylinder 1. There is a big difference. Did you find and repair the condition? Gas vapors are absorbed by a canister of activated charcoal.
He does not remember disconecting or connecting this sensor at all. Bad oxygen sensor upstream before cat bank one. If you have any doubt as to repairs on your vehicle, please contact your technician. This is usually called the fuel tank pressure sensor or the evaporative pressure sensor. Envoys and Trailblazer, Bravada, Ascender between '03-'06, came from the factory with defective designed parts installed in the gauge cluster. It retains this information in memory until it conducts the test a second time. It is a good idea, regardless of what I'm about to tell you below, to check and make sure everything I mentioned above is in good working order.
If a leak is detected, then a code is set in the engine control module and the check engine light is illuminated. The idle relearn or reset procedure is very important, otherwise this code may still remain even after a throttle body clean. The computer unit is faulty. Went home let car cool and retested. I changed the 2 sensor on the right pipe but problem is still the same.