Long‑term high‑temperature exhaust impact, sensor element carbon deposition and wiring aging lead to signal drift. Typical failure symptoms：MIL check‑engine lamp illuminated, increased fuel consumption, black exhaust smoke, failed emission test, related OBD fault codes stored. Many technicians only inspect fuel injectors and catalytic converter, ignoring defective oxygen sensor and fault recurs.
This replacement oxygen sensor replicates OEM thread size, signal characteristic and complete sealing gasket. Pay attention to anti‑seize treatment on thread during installation. Suitable for Mitsubishi pickup and sedan exhaust‑system troubleshooting assignments.
