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02-14-2017, 04:46 PM | #1 | |
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Join Date: Sep 2016
Location: Pittsburgh
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P0441,P0445,P0466 error codes for Solara 2005
Hello everyone,
My Solara suddenly has an check engine light on while I was driving from home to work this morning. I used my scan tool to get error codes. It shows multiple errors of P0441, P0445, P0446. Before taking my car to a dealer, I would like to know what would be possible fixes for these multiple error codes. Your advice will be highly appreciated! |
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02-15-2017, 07:44 AM | #2 | |
Resident Chemist
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Re: P0441,P0445,P0466 error codes for Solara 2005
From the FAQ thread in the Camry section (Note that the potential problems are listed with the most probable culprit on the top of the list):
P0441 and/or P0446 A. Diagnostics for PO441: 1. Remove and replace Vacuum Hoses between EVAP VSV and Charcoal Canister. 2. If there is a metal vapor pipe between EVAP VSV and Charcoal Canister, clean inside of vaporpipe 3. Replace EVAP VSV and Charcoal Canister assembly with new parts. B. Diagnostics for P0446: 1. Inspect vacuum hoses and pipes between EVAP (Purge) VSV and Charcoal Canister for leaks. 2. Replace Vapor Pressure VSV and Canister. NOTE :When performing diagnostics for an occurrence of a MIL "ON" condition, Diagnostic Trouble Code (DTC) P0441 may be result of debris in Evaporative Emission Control System. This may cause blockage of a vapor line, or a stuck VSV, as described in troubleshooting area of Repair Manual. 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. 10. 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" Last edited by Brian R.; 02-19-2017 at 07:57 PM. |
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