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    All O₂ Heater + Purge Valve Codes at Once (P0135, P0141, P0155, P0161, P0443) — Fuse/Wiring Issue?

    Year/Model: 2005 Mustang GT (4.6 3V) Mods: Steeda CAI, BBK throttle body, Borla ATAK exhaust, high-flow cats, Lito tune, misc suspension upgrades Problem: A few weeks ago, I suddenly got P0135, P0141, P0155, P0161 (all 4 O₂ heater circuits) and P0443 (purge valve) at the same time. My A/C also...
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