{"pair":"p2401-toyota","code":"P2401","make":"TOYOTA","aliases":["SCION"],"pulled":"2026-07-03","n_records":12,"n_distinct":11,"derived_counts":{"canister":10,"water_intrusion":6,"tsb_cited":6,"wiring_suspected":1,"cost_mentioned":5},"notes":{"lanes":"federal (NHTSA, counted) and community (forum/reddit/YT, shown-not-counted in the pilot) are never pooled; the top-level counts are the federal lane the money page reads","dedup_rule":"near-identical narratives (Jaccard >= 0.60 federal / >= 0.90 community + same-author) read as one owner's case","mileage":"as stated by the filer/owner; implausible odometer values are kept verbatim and treated as typos in prose","pii":"no VINs, names, or contact fields are carried; public forum author handles stay in the private raw archive, not on the page","community_counts":"withheld by design — see lanes.community.counts_withheld_reason"},"schema_version":"1.5","lanes":{"federal":{"source":"NHTSA ODI (federal complaint database)","counted":true,"pulled":"2026-07-03","n_records":12,"n_distinct":11,"derived_counts":{"canister":10,"water_intrusion":6,"tsb_cited":6,"wiring_suspected":1,"cost_mentioned":5},"bias":"federal complaints are self-selected — owners file when a problem is expensive, unresolved, or felt as a safety issue, so this set skews toward bad outcomes and says nothing about how often the code sets in the first place"},"community":{"source":"public forum / Reddit / YouTube individual diagnostic or repair journeys","counted":false,"harvested":"2026-06-23","n_records":1,"n_distinct":1,"reviewed_records":16,"excluded_public_records":15,"excluded_public_reasons":{"outcome_not_verified":11,"pair_not_proven":3,"not_public":0,"insufficient_public_evidence":0,"not_individual_case":1,"duplicate_journey":0},"platforms":{"reddit":1},"case_roles":{"owner-case":1,"repair-case":0},"derived_counts":null,"counts_withheld_reason":"individual public cases are shown as evidence, but no aggregate percentage is computed from a self-selected discussion sample under pilot-grade extraction","bias":"public discussion records are self-selected — they are richer on what was tried, what reportedly changed, and what it cost than on incidence. A record can be an owner account or a documented repair case; neither proves fleet prevalence."}},"cases":[{"id":"ODI-10605429","date":"2014-06-23","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2006 Scion Tc","mileage":150000,"components":["ELECTRICAL SYSTEM","FUEL SYSTEM, GASOLINE"],"tags":["canister","tsb_cited"],"quote":"P043E, PO444F, P2401,P2402,P2419 CODES CHARCOAL CANISTER ASSEMBLY FAILED  SEEMS TO BE A VERY COMMON PROBLEM WITH THIS PARTICULAR TOYOTA MODEL AND TOYOTA SHOULD","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10605429","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10263297","date":"2009-03-27","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2006 Scion Xa","mileage":null,"components":["FUEL SYSTEM, GASOLINE","UNKNOWN OR OTHER","EQUIPMENT"],"tags":["canister"],"quote":"I OWN A 2006 SCION XA. I BOUGHT THE CAR NEW OFF OF THE SHOW ROOM. AFTER 5 MONTHS OF OWNING THE CAR THE CHECK ENGINE LIGHT CAME ON. I TOOK THE CAR BACK TO THE","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10263297","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10289046","date":"2009-10-20","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2006 Scion Xa","mileage":58734,"components":["FUEL SYSTEM, GASOLINE"],"tags":["canister","water_intrusion"],"quote":"I OWN A 2006 SCION XA AND VERY RECENTLY THE CHECK ENGINE LIGHT CAME ON. I HAD IT DIAGNOSED...\"P2401 EVAPORATE LEAK DETECTION PUMP CONTROL CIRCUIT\". THE","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10289046","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10550421","date":"2013-10-31","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2006 Scion Xa","mileage":46500,"components":["FUEL SYSTEM, GASOLINE","ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL"],"tags":["canister","cost_mentioned","tsb_cited"],"quote":"SCION XA 2006 WITH JUST 46000 (MOSTLY HIGHWAY!) MILES DID NOT PASS EMISSIONS TEST DUE TO DIAGNOSTIC CODES: P2401, P043E, PO43F, P2419, P2402 INDICATING","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10550421","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10820387","date":"2016-01-15","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2006 Scion Xa","mileage":105000,"components":["ENGINE"],"tags":["canister","tsb_cited","water_intrusion"],"quote":"BOUGHT A 2006 SCION XA THAT PREVIOUSLY HAD THE CHARCOAL CANISTER ASSEMBLY AND FUEL FILLER PIPE COVER REPLACED UNDER TSB EG047-06.  CEL WAS ON WHEN I BOUGHT THE","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10820387","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10957001","date":"2017-02-26","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2006 Scion Xa","mileage":100000,"components":["ENGINE","FUEL/PROPULSION SYSTEM"],"tags":["canister","cost_mentioned","water_intrusion"],"quote":"HAWAII IN THE HOUSE ...I OWN A 2006 SCION XA AND  RECENTLY THE CHECK ENGINE LIGHT CAME ON. I HAD IT DIAGNOSED AT HILO TOYOTA..\"P2401 EVAPORATE LEAK DETECTION","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10957001","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10969318","date":"2017-03-29","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2006 Scion Xa","mileage":84000,"components":["UNKNOWN OR OTHER"],"tags":["cost_mentioned","tsb_cited"],"quote":"2006 SCION XA CHECK ENGINE LIGHT WITH DIAGNOSTIC CODES: P2401, P043E, P043F, P2419, P2402 INDICATING \"EVAPORATION LEAK/EMISSION PROBLEMS.\" THERE APPARENTLY ARE","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10969318","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-11387241","date":"2021-01-08","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2007 Toyota Corolla","mileage":130000,"components":["ELECTRICAL SYSTEM","ENGINE","FUEL/PROPULSION SYSTEM"],"tags":["canister","wiring_suspected"],"quote":"STARTED CAR THIS MORNING AND THE CHECK ENGINE LIGHT CAME ON. TOOK TO PARTS STORE AND HOOKED IT UP TO THE COMPUTER AND FOUND CODES (P2401, P043E, P043F, P2402,","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=11387241","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-11533362","date":"2023-07-19","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2009 Toyota Corolla Matrix","mileage":null,"components":["FUEL/PROPULSION SYSTEM"],"tags":["canister","water_intrusion"],"quote":"Known well issues, faulty thank getting water to canister.   Car Scanner ELM OBD2 Version: 1.99.2/1.99.2/iOS DTC report Connection profile: Toyota 2006-2009","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=11533362","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-11419086","date":"2021-05-31","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2017 Toyota Rav4","mileage":null,"components":["ENGINE","POWER TRAIN"],"tags":[],"quote":"Recurring Problems with AWD Malfunction, Engine Light On. Contacted Toyota two month ago, No reply from Toyota; Description of Complaints: On March 19, 2021, I","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=11419086","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10442353","date":"2012-01-04","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2007 Toyota Yaris H/B","mileage":125000,"components":["FUEL SYSTEM, GASOLINE","ENGINE AND ENGINE COOLING"],"tags":["canister","cost_mentioned","tsb_cited","water_intrusion"],"quote":"EXPERIENCED FAILURE OF EMISSIONS EVAP SYSTEM DUE TO WATER INTRUSION THROUGH POORLY DESIGNED COMPONENTS.  CHECK ENGINE LAMP (CEL) ILLUMINATED CONSTANT ON DURING","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10442353","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"ODI-10694017","date":"2015-03-13","source_type":"nhtsa","source_name":"NHTSA ODI complaint (federal record)","vehicle":"2007 Toyota Yaris H/B","mileage":830000,"components":["ENGINE AND ENGINE COOLING","FUEL/PROPULSION SYSTEM"],"tags":["canister","cost_mentioned","tsb_cited","water_intrusion"],"quote":"EXPERIENCED FAILURE OF EMISSIONS EVAP SYSTEM DUE TO WATER INTRUSION THROUGH POORLY DESIGNED COMPONENTS. CHECK ENGINE LAMP (CEL) ILLUMINATED CONSTANT ON DURING","quote_truncated":true,"live_url":"https://api.nhtsa.gov/complaints/odinumber?odinumber=10694017","archive_url":null,"archive_date":null,"verifiability":"federal-record"},{"id":"swi-8e03ca9172139a21","date":"2024-10-29","source_type":"reddit","source_name":"reddit.com · reddit","vehicle":"2010 Toyota Corolla","mileage":null,"tags":["canister"],"quote":"I've been trying to search online for solutions to these codes on my 2010 Corolla, and figure I should likely take it to a Toyota dealership instead of my","quote_truncated":true,"cost":null,"part_numbers":[],"fixed":false,"resolution":"unresolved","resolution_status":"unresolved","case_role":"owner-case","symptoms":[],"tried":["vapour canister","purge valve"],"outcome_quote":null,"source_lane":"native","live_url":"https://www.reddit.com/r/MechanicAdvice/comments/1gewtgy/corolla_2010_check_engine_and_vsc_lights_p043e/","archive_url":"https://web.archive.org/web/20260727010525/https://www.reddit.com/r/MechanicAdvice/comments/1gewtgy/corolla_2010_check_engine_and_vsc_lights_p043e/","archive_date":"2026-07-27","verifiability":"archived"}]}