What does error code P0133 mean on a 2005 Jeep Grand Cherokee?

Answer 1

Error code P0133 on a 2005 Jeep Grand Cherokee indicates a problem with the oxygen sensor located in the upstream position (sensor 1) of the exhaust system. Specifically, it signifies that the sensor is taking too long to respond to changes in the exhaust gases, which can lead to poor fuel economy and increased emissions. This issue may be due to a faulty oxygen sensor, exhaust leaks, or issues with the engine's air-fuel mixture. It is advisable to diagnose and address the underlying cause to ensure proper vehicle performance.