Bypass charcoal canister?
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Hi i recently got a p0442 code which states that the evaporative emissions yada yada is at fault. I replaced the gas cap and made sure its in there really good but code still came on on numerous tries. My question is can i bypass this charcoal canister and its module?
Last edited by z3ds; 09-09-14 at 09:50 AM. Reason: solved problem
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I've never heard of bypassing the canister. Although, I am sure that some one with enough ingenuity could figure out a way to do. But, before I go that route I'd check for loose or leaky hoses and a faulty vacuum switch that is on the canister. Those things go bad a lot more often than the canister does.
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I've never heard of bypassing the canister. Although, I am sure that some one with enough ingenuity could figure out a way to do. But, before I go that route I'd check for loose or leaky hoses and a faulty vacuum switch that is on the canister. Those things go bad a lot more often than the canister does.
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I was able to bypass the charcoal canister by disconnecting the tube that connects from one of the pressure sensor to the other pressure sensor with the blue connector. Its been 3 days, no cel. I even passed my emissions yesterday.
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Lexus master tech here.
is your gas cap aftermarket or OEM? I have seen plenty of P0442 codes, and 95% of the time, they are bad gas caps. Always replace a gas cap the the OEM one. Aftermarket ones are usually crap. I doubt it would be a charcoal canister, as they would generally leave p0446/p0440 codes. The only other thing to check is all the rubber lines going to the purge control valve, as they have a tendency to crack and leak with age/milage.
is your gas cap aftermarket or OEM? I have seen plenty of P0442 codes, and 95% of the time, they are bad gas caps. Always replace a gas cap the the OEM one. Aftermarket ones are usually crap. I doubt it would be a charcoal canister, as they would generally leave p0446/p0440 codes. The only other thing to check is all the rubber lines going to the purge control valve, as they have a tendency to crack and leak with age/milage.
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I'llTE=itztwinki3;8705683]i have the same problem can you take pics of how you did that?[/QUOTE]
I'll post some pic when I get the chance to. They are the only ones with cables and vacuum tubes connected to in the charcoal canister area.
I'll post some pic when I get the chance to. They are the only ones with cables and vacuum tubes connected to in the charcoal canister area.
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Lexus master tech here.
is your gas cap aftermarket or OEM? I have seen plenty of P0442 codes, and 95% of the time, they are bad gas caps. Always replace a gas cap the the OEM one. Aftermarket ones are usually crap. I doubt it would be a charcoal canister, as they would generally leave p0446/p0440 codes. The only other thing to check is all the rubber lines going to the purge control valve, as they have a tendency to crack and leak with age/milage.
is your gas cap aftermarket or OEM? I have seen plenty of P0442 codes, and 95% of the time, they are bad gas caps. Always replace a gas cap the the OEM one. Aftermarket ones are usually crap. I doubt it would be a charcoal canister, as they would generally leave p0446/p0440 codes. The only other thing to check is all the rubber lines going to the purge control valve, as they have a tendency to crack and leak with age/milage.
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