Question about 2004 Toyota 4Runner
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Posted on Jan 02, 2017
Toyota camry 1999 has engine light on. Diagnostic Code PO441 appears on testing. What does this code m ean for a 99 Camry?
Posted on Mar 01, 2009
SOURCE: engine light on Codes show
Hello! Those three codes commonly indicate the followi possibilities:
The gas cap was not sufficiently tightenend ater fueling, a bad gas-cap rubber o-ring, the vehicle had the key in the 'on', or engine running, or the tank was filed all of the way up the neck.
Any one of the abope causes will set all three codes.
Posted on Dec 21, 2009
Hi, both codes mean: Evaporative Emission Control System Leak Detected (very small leak).
This may be a very tough issue to diagnose or it may be a simple problem like a loose gas cap. Check the gas cap, and visually check for any loose hoses under the hood and under the car.
Posted on Aug 02, 2010
Testimonial: "If it is a loose cap will the check engine light clear automatically? "
SOURCE: what is a po442 code?
Small evap leak, often caused by not completely tightening the gas cap. Before you worry to much about this code, clear it and make sure the gas cap is tight each time you fill up. If it comes back after that, you may have to take the car to a shop that has a smoke machine so the system can be leak tested. <!-- from fixya rte -->
Posted on Aug 13, 2010
SOURCE: Rough ide while in drive:
easy fix..o.k. a P0171 is a lean engine dtc..witch means wrong air fuel mixture..ideal is 14.1 yours is lean...witch means more air than fuel..check to see if there is a intake manifold leak..or vacuum leak.spray small amount of carb cleaner around intake manifold gaskets and see if engine smooths out if it does its a gasket also check for vacuum leaks around air filter rubber snorkle.and all vacuum leaks...if these check out ok...replace the 1st 02 sensor it also controls air and fuel and will cause this issue....as far as a P0442 thats your fuel evap system witch is un related to the first code make shure your fuel cap is tight and sealed...if so replace the evap vent control valve on the canister in the rear by the fuel tank..
Posted on Apr 19, 2011
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