Posted on 6/10/2026
If your Toyota turns on the check engine light, oxygen sensor may be the culprit. Fortunately, sensor failures are fairly rare. In recent years, most frequent need for oxygen sensor replacement was due to the catalytic converter thefts – Toyota Prius was the most frequent victim. Fortunately the epidemic of catalytic converter theft has subsided. But there is a chance that your Toyota’s oxygen sensor will fail. The sensor lives in an environment of hot exhaust gases, and is bombarded by small particulates – tough environment by any standards. When it fails, the onboard computer will turn on the check engine light. Unfortunately, the check engine light can come “on” for thousands of conditions, so a professional inspection and diagnosis is a necessity. At our Denver auto care shop we offer full service Toyota maintenance, diagnostics and repairs by nationally certified technicians. When your Toyota needs help, they will use cutting-edge diagnostic tools a ... read more