P0135 Cadillac XLR

P0135 is a very common OBDII code that occurs in the Cadillac XLR. 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

P0303 Cadillac XLR: Cylinder 3 Misfire Diagnosis

If your Cadillac XLR 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 Cadillac XLR

P0741 is a very common trouble code. It’s know to affect the Cadillac XLR quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The XLR 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

Cadillac XLR P0301: Cylinder 1 – Misfire (Causes + How to Fix)

P0301 is a fairly common trouble code with the Cadillac XLR. 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 XLR.  Fixing P0301 should be considered a high priority. Unlike a lot of … Read more

Cadillac XLR P0700 Code: Meaning, Causes, + How to Fix

A trouble code is a signal that is generated by an automatic transmission system whenever it detects an issue in the Cadillac XLR that requires your attention. The P0700 code is a general code that is typically accompanied by another code that specifies the specific problem. This code is part of the OBDII system and … Read more

Cadillac XLR P0300: Meaning, Causes, + How to Fix

P0300 is a generic OBDII code that can occur with the Cadillac XLR. 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

Cadillac XLR P0171: Causes, Diagnosis, + How to Fix

One of the most common trouble codes with the Cadillac XLR is P0171. It indicates that your Cadillac XLR 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