That is where my crack was. These codes commonly appear shortly after getting gas, due to cap not back on tight. If the valve works as intended, the vacuum will decay almost immediately: if it does not, the valve is also defective, and it must be replaced as well. This information can be very useful should an intermittent fault be diagnosed later on. I was getting the P0442 and P0455 engine codes. If so, how was it fixed? Not sure what the guys at Autozone are pull but on a Ram 5. If it is the cap? These codes commonly appear shortly after getting gas, due to cap not back on tight.
I then replaced both hoses going into the evap canister which were both cracked- no luck. When you find a leak, repair it, and rescan. This code can be set by a leak in the lines or a clogged charcoal canister. Step 5 Even if the purge valve is known to open and close, how well it works must be tested as well. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine. Bear in mind that if multiple codes are present, they must be diagnosed and resolved in the order in which they were stored.
Always refer to the manual for the application being worked on to correctly locate the components that are being diagnosed or worked on. I did crawl under the car and seen the canister in the back of the car by the filler inlet. Cut it back and re-installed, reset computer and all set. Piece of hose about 4. It will be mounted on a bracket, it will have two hoses attached to it, and have a single connector. It means a large leak has been detected.
It was at the T you refer to where it connects to hardline going to the tank. Clear the code and see if it reappears. Resistance values on these wires must match the values stated in the manual exactly. Frank have you checked the Gas cap seal yet? I changed gas caps and still recieved the P0442 code. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap.
Note however that this is rare event, and the fault must be sought elsewhere before any controller is replaced. As a first step in testing the purge valve, test its internal resistance and compare this value with the value stated in the manual, and replace the valve if it does not test within stated specifications. Although canisters work well with gasoline vapors, they dislike liquid gasoline with a passion. Check for any damage, especially at the hose connections. I took some pics and hope the links will work of the hose and the charcoal canister. Perform a thorough visual inspection of all associated wiring; look for damaged, burnt, disconnected, shorted, or corroded wiring and connectors.
So to simplify I have a code but no engine light. Tighten your fuel cap and be happy that it isn't a real problem! Truck is having difficulty starting takes two to three turns of the key to start the truck. P0455 is a large leak. I've had the evap code, new cap didn't clear it up. Purge valves are normally closed, so provided the test equipment is not defective in any way, the vacuum must hold if the valve is in good condition. There's a rubber hose there that looks fine also.
Could be anything from a crack in a vaccuum line to a faulty purge solenoid. Most common reason is If you did not put your gas cap on all the way. Refer to the notes above if any other codes are present along with code P0445. I have a code scanner Hypertec and when I've gotten a check engine light I check it with the scanner. Step 2 If the code persists after clearing all codes, consult the manual on the location, routing, color-coding, and function of all wiring associated with the purge valve. Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. To ensure sufficient volume in the tank to begin the various diagnostic tests, the fuel level must be between 15% and 85%.
Yes sir you can repair this yourself. Most common reason is If you did not put your gas cap on all the way. But, if that doesn't solve the problem you may want to seek a competent local mechanic to run a smoke test looking for leaks in the evap system. Make repairs as required, clear all codes, and retest the system to see which codes if any return. A leak is detected by monitoring for a decrease in vacuum level over a given time period, all other variables remaining constant.
Let me know if you have any questions and I'll do my best to answer them. Finally found the evaporative codes in the manual, the hard way, only the codes were. The primary function of the vent valve is to allow fresh air to enter the system to help displace fuel vapors along sometimes-long vacuum lines towards the engine. Jun 08, 2009 My father has the same problem with his 2001 Chrysler Sebring, the key will go into the ignition switch but wont turn. Short circuits can destroy the battery as well as the purge valve, in addition to causing serious burns when the test wires overheat.