What are the symptoms of a damaged oxygen sensor?
2 Answers
Here are the symptoms that may occur when the oxygen sensor is damaged: 1. The engine malfunction indicator light remains on when the ignition is in the ON position. 2. A small amount of black smoke is emitted when gently pressing the accelerator pedal while stationary, and a large amount of black smoke is emitted during rapid acceleration. 3. The engine lacks power. 4. Fault code: P01D6 (intake pressure sensor voltage below lower limit). Abnormal intake pressure signal prevents the ECU from receiving correct intake air volume information, leading to abnormal fuel injection quantity. This results in incomplete combustion, engine power loss, and black smoke emission during acceleration. Both wiring harness connection issues and sensor failure can cause this fault.
I've been driving a regular family car for many years. One day, I noticed a sudden spike in fuel consumption. Previously, a full tank could last 500 kilometers, but now it barely reaches 400. Moreover, the engine warning light kept glowing yellow, and I felt a significant lack of power while driving, with sluggish acceleration and severe shaking. When I took it to the repair shop, the technician diagnosed a faulty oxygen sensor, which was disrupting the air-fuel mixture regulation and causing incomplete combustion. They also warned that ignoring it could lead to foul-smelling exhaust fumes and even damage the catalytic converter, resulting in higher repair costs. After replacing the sensor, the car immediately returned to normal. Regular maintenance to prevent carbon buildup and clogging of this sensor can save a lot of money in the long run.
