Canister purge valve P0456 error
01-29-23, 01:12 PM
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Canister purge valve P0456 error
01-30-23, 07:25 AM
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The PO456 error code indicates a small evap leak and does not necessarily mean the purge valve is bad. It could be a cracked hose, worn gas cap or some other problem in the system. A smoke test can be done by a repair shop to identify the leak. There are some videos on Youtube if you search for Toyota PO456 which show the valve location the 3.5 liter engine.
01-30-23, 03:07 PM
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good info, thanks again! Shop said it’s probably gas cap (which is old), so we replaced with Lexus OEM cap & hopefully that will keep check engine light off for now.
The PO456 error code indicates a small evap leak and does not necessarily mean the purge valve is bad. It could be a cracked hose, worn gas cap or some other problem in the system. A smoke test can be done by a repair shop to identify the leak. There are some videos on Youtube if you search for Toyota PO456 which show the valve location the 3.5 liter engine.
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