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#1
09-01-2005, 02:26 PM
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2001 Camry Le - Check Engine Light On - Codes P0446, P0300
Check Engine Light on my 2001 CAMRY came on 2 days ago
It has apprx. 100,000 miles on it Has been working good so far The Codes are as follows: P0446 P0300 P0446 again! Any one Can give some interpretation as to what might be wrong Still seems to work fine 
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#2
09-01-2005, 02:59 PM
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Re: 2001 Camry Le - Check Engine Light On - Codes P0446, P0300
From the FAQ thread:
P0441 and/or P0446 Possible Problems Open or short in VSV circuit for vapor pressure sensor VSV for vapor pressure sensor Open or short in vapor pressure sensor circuit Vapor pressure sensor Open or short in VSV circuit for EVAP VSV for EVAP Vacuum hose cracks, hole, blocked, damaged or disconnected Charcoal canister cracks, hole, or damaged 1. Check the VSV connector for EVAP, VSV connector for vapor pressure sensor and vapor pressure sensor connector for looseness and disconnection 2. Check the vacuum hose between intake manifold and VSV for EVAP, VSV for EVAP and charcoal canister, charcoal canister and VSV for vapor pressure sensor, and VSV for vapor pressure sensor and vapor pressure sensor. Check these hoses for correct connection, looseness, cracks, holes, damage, and blockage. 3. Check voltage between terminals VC and E2 of ECM connector (4.5-5.5 V). (replace ECM if faulty) 4. Check voltages between terminals PTNK and E2 of ECM connector while applying vacuum to vapor pressure sensor (2.9-3.7 V). If faulty, check for open and short in harness and connector between vapor pressure sensor and ECM. If ok at this point, replace vapor pressure sensor. If voltage above is ok, Check VSV for EVAP. When ECM terminal EVP is grounded (ignition "ON"), Air should flow in pipe E (inboard on tube) on VSV and out F (outboard on tube) on VSV (Don't use high pressure air for this test). When EVP is not grounded, air does not flow in E and out F. 5. Check operation of VSV for EVAP. Remove VSV from engine. Check that there is continuity between the two terminals (30-34 ohms). If there is no continuity, replace VSV for EVAP. Check that there is no continuity between either terminal and body. If there is continuity, replace VSV for EVAP. Check that air does not flow from inner port (E) to outboard port (F). Check that air flows from port E to F when you apply battery voltage across terminals. If no air flows, replace VSV for EVAP. 6. Check the vacuum hose between intake manifold and VSV for EVAP, and VSV for EVAP and charcoal canister. Check as above. 7. Check for open or short in harness and connector between EFI main-relay and VSV for EVAP and ECM. If faulty, repair or replace harness or connector. If ok, check and replace ECM. 8. Check VSV for vapor pressure sensor. When ECM terminal TPC is grounded (ignition "ON"), Air should flow in pipe E (inboard on tube) on VSV and out F (outboard on tube) on VSV. When TPC is not grounded, air flows out G (outside of connector). If ok, check and replace charcoal canister. If not functioning correctly, check function of VSV for vapor pressure sensor. Remove from engine. Check that there is continuity between the terminals (33-39 ohms). Replace the VSV if there is no continuity. Check that air flows from port E (inboard in tube) to port G (side of connector). Check that air flows from port E to port F (outboard in tube) when battery voltage is applied across terminals. Replace VSV if function is incorrect. 9. If good, Check the vacuum hose between charcoal canister and VSV for vapor pressure sensor, and vapor pressure sensor and VSV for vapor pressure sensor - check as above. 11. Check for open and short in harness and connector between EFI main replay and VSV for vapor pressure sensor and ECM.
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Forum Guidelines:http://www.automotiveforums.com/vbulletin/guidelines.html "What we've got here is a failure to communicate"
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#3
09-22-2005, 04:37 PM
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Re: Re: 2001 Camry Le - Check Engine Light On - Codes P0446, P0300
Quote:
Hi Brian, Thanks a lot for your very detailed Step-by-Step procedure I not an informed car user All it matters is how much it will cost to fix this issue After I got the Check Engine Light once, I erased it ran well for 1000 miles Check Engine Light came on again! this time the code only read P0446 erased that as well asnd after a few days, the engine light came on Took it to the Dealer The dealer says he got P0446 AND P0442 Came up with a horrendous price of 1800 USD to fix it He said that cannister needs to be changed as also the pipe I dont know which pipe (he says that part alone is 1200 USD He says that the Cat converter is showing threshhold values Any way, I took it back Will probably give to some reliable gas station guyz What do u think? Any one please let me know if u have any thing to suggest Thanks
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#4
09-25-2005, 12:45 AM
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Re: 2001 Camry Le - Check Engine Light On - Codes P0446, P0300
Bring it to someone besides the dealer. The list of possible problems I posted are mostly fairly cheap items and easy to replace.
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Forum Guidelines:http://www.automotiveforums.com/vbulletin/guidelines.html "What we've got here is a failure to communicate"
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