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What causes the P0440 code to appear in a Toyota Camry?
The P0440 code is a diagnostic trouble code that indicates a general malfunction in the evaporative emission control (EVAP) system. This code may appear in a Toyota Camry due to various reasons, including some of the reasons mentioned above for the P0442 code. Additionally, the following issues can cause the P0440 code: a. Faulty EVAP system pressure sensor: A malfunctioning EVAP system pressure sensor can provide incorrect pressure readings, triggering the P0440 code. b. Malfunctioning charcoal canister: A faulty charcoal canister may not store fuel vapors properly, leading to the P0440 code. c. Faulty or damaged wiring: Damaged wiring or connectors in the EVAP system can lead to improper communication between the components, resulting in the P0440 code. To address these issues, it's essential to diagnose the root cause of the problem and make the necessary repairs or replacements.
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