20 Most Recent 2002 Lexus ES 300 - Page 5 Questions & Answers

p0442 is evaporative emission control system leak detected (small leak, and p0446 is evaporative emission control system vent control circuit malfunction

this sounds like the egr is going bad is ur check engine light on by any chance?

The way to stop the check engine light is to pull the error code(s) from the computer and resolve what is indicated. REMEMBER the code is a CLUE and not necessarily the issue, for example, an intake leak can cause a oxygen sensor to register out of range....The light would reset automatically, in absence of errors.

Since your "check engine" is ON, have some fault codes stored in the PCM (Powertrain Control Module / computer); to know exactly about what codes are the, will need scanned the PCM wit OBD II scaner reader tool; some autozone or autoshop with this tool make this for free. The check engine light can come on for 1 of about 200 different reasons, most times it's something simple such as a evap leak or loose gas cap.As a factory default any time the check engine light comes on the TRAC and VSC systems are disabled as a default.Soft reset could be disconnected the battery few minutes (sometimes work), but if the codes turn on again, is confirm, have fault codes stored and need to know what is to solve it.Try this ans send us news about this code numbers founded.

there 2 things that could possibly causing your problem either the battery you just bought isn't good aare you've got and alternator problem... Are you've been leaving something turned on, on the car that runs down the battery. let me know what happens.. Most of the Lexus have those problems.

P0442 and P0456 are both evaporative emission error codes due to a small leak. The most common cause is a leaking gas cap or hose leak on that system. I did not list a code for your 0513. I am sending you a little information about your problem.. Best of Luck to you..


2003 Lexus RX300 3.0L 2003 Toyota Sienna 3.0L 2003 Toyota Highlander 3.0L, Eng Cfg V6, Eng Des 1MZFE, USA/Canada 2004 Toyota Avalon XL 3.0L
Check engine light is on with trouble codes P0442 and P0456. The codes are evaporative system small leak codes.
1. Verify that the gas cap is a factory Toyota gas cap and visually inspect that all hoses and lines are tight and connected.

2. Locate the canister closed solenoid and the vacuum switching valve on the canister. Manually ground them and verify that they operate and function. The canister closed solenoid is normally open and should close when grounded. The vacuum switching valve on the canister is normally closed and needs to open when grounded.

3. Verify that the hoses are not loose or pulled off the canister closed valve on the air cleaner housing. This has been a common problem on some models.

4. If no problem is found, the next step is to ground the canister closed solenoid and the vacuum switching valve under the vehicle and simulate an evaporative test and verify that the system holds a vacuum and functions normally. When the solenoids are grounded, back probe the Blue/Black (L/B) wire on the pressure sensor, and with no vacuum or pressure, the voltage should read around 3.3 volts. Start up the vehicle and turn on the purge vacuum switching valve and use engine vacuum to draw down the system to around 2 volts on the pressure sensor. If the voltage does not increase rapidly, there is no problem. If the voltage increases quickly, look for the leak in the evaporative system. Potential Causes: Canister Closed Valve
Disconnected Canister Closed Valve (CCV) Hose
Gas Cap
Harness
Vacuum Switching Valve - For the pressure sensor.

this video will assist you in that http://www.youtube.com/watch?v=eQpPcdvSBks&feature=relmfu