P0135 is a very common OBDII code that occurs in the Cadillac STS. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1 The purpose of the heated … Read more
If your Cadillac STS has the P0303 trouble code, you should know that it’s about as common of a code as there is. It’s a generic code (same meaning for all vehicles) that indicates that your car’s third cylinder is misfiring. P0303 is a real drivability concern and should be dealt with right away. If … Read more
P0741 is a very common trouble code. It’s know to affect the Cadillac STS quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The STS uses a clutch in the torque converter to lock the engine and transmission together at highway speed. P0741 can register whenever this connection … Read more
P0302 in the Cadillac STS is a common OBD II trouble code. It indicates that your car’s second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it’s bad enough to cause your STS’s check engine light to come on, you shouldn’t drive your car at … Read more
P0301 is a fairly common trouble code with the Cadillac STS. It’s an OBD2 code and indicates that your car’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your STS. Fixing P0301 should be considered a high priority. Unlike a lot of … Read more
One of the most common problems with the Cadillac STS is when it throws the P0700 trouble code. A trouble code is a code thrown out by an automatic transmission whenever it detects in the STS that there is an issue that needs your attention. P0700: Transmission Control System Malfunction In the case of the … Read more
P0300 is a generic OBDII code that can occur with the Cadillac STS. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, … Read more
One of the most common trouble codes with the Cadillac STS is P0171. It indicates that your Cadillac STS is running lean on the bank one side. It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. The most … Read more