U0101 is a generic powertrain code, which means it has the same definition for the Cadillac STS as it would any other vehicle. It means that your STS’s TCM (Transmission Control Module) can’t communicate with the rest of the vehicle, usually due to a bad wiring harness or an issue with the TCM itself. U0101 … Read more
P219B is a generic OBD2 trouble code. This code indicates that your Cadillac STS’s air/fuel ratio is out of balance (too rich or too lean) on the bank 2 side of the engine in question. Your STS is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are … Read more
P219A is a generic OBDII code. The code indicates that your Cadillac STS’s air/fuel ratio is out of balance (too rich or too lean). Your STS is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are reporting the problem with the air-fuel ratio. With P219A are … Read more
U0100 is a generic diagnostic trouble code, meaning it has the same definition for any vehicle made in the 1996 model year or newer (including the Cadillac STS). This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. When a vehicle has … Read more
P2099 is a generic OBD II code. It has the same meaning for the Cadillac STS as it would any other vehicle. It specifically indicates that your STS detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter on the bank 2 side of the engine is too rich. (too much fuel … Read more
P2097 is a generic OBD II code, which means that it has the same meaning for the Cadillac STS as it would any other vehicle. It specifically indicates that your STS detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter is too rich. (too much fuel for the amount of fuel … Read more
P2098 is a generic OBD II code. It specifically indicates that your STS detected a lean condition after the catalytic converter (too much air for the amount of fuel present). P2098 Definition This particular code is generic, so it has the same meaning for your Cadillac STS as any other vehicle. There are three parts … Read more
P1153 is not a very common diagnostic trouble code. It can have different meanings depending on the manufacturer in question. For the Cadillac STS, it means: P1153:HO2S Insufficient Switching (Bank 2, Sensor 1) As long as your scanner confirms that the code is for insufficient switching of the heated oxygen sensor, you’re good to go. … Read more
P1133 can have different definitions depending on the vehicle manufacturer in question. In the case of the Cadillac STS it means: HO2S Insufficient Switching (Bank 1, Sensor 1) It is typically caused by a failure of the heated oxygen sensor. But, there can be a few other causes as well. They are all addressed below. … Read more
U0073 Definition: Control Module Communication Bus”A” Off U0073 is a fairly common trouble code. It is generic, so it has the same meaning for your Cadillac STS as it would any other. This code appears when something has interrupted the communication between two of your STS’s control modules. The most common causes of U0073 are … Read more