Buick Rainier P0171: Causes, Diagnosis, + How to Fix

One of the most common trouble codes with the Buick Rainier is P0171. It indicates that your Buick Rainier 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

Buick Rainier P0141 Diagnosis

P0141 is a very common OBDII code that occurs in the Buick Rainier. It is caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 1 sensor 2, which is downstream from the catalytic converter. It technically stands for: The purpose of the heated element in the oxygen sensor … Read more

P0128 Buick Rainier: Meaning, Causes, How to Fix

The P0128 OBD II trouble code indicates that your Buick Rainier’s engine coolant temperature has not reached its required operating temperature within a certain amount of time after starting the vehicle. This code can appear as soon as you start your vehicle, or it can also occur while driving. It’s essential to address this issue … Read more

Buick Rainier P0122: TPS “A” Circuit Low Input

P0122 is a common trouble code with the Buick Rainier. It’s an OBDII code that references issues with the Throttle Position Sensor (TPS). It is relatively serious problem since it can leave your vehicle stranded or severely limited.     OBDII code P0122 is a serious problem that requires serious attention. Diagnosing it can be … Read more

Buick Rainier P0420: Meaning, Causes, + How to Fix

This page is meant to help you troubleshoot the Buick Rainier P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more

Buick Rainier P0014: Causes + How to Fix

P0014 is a relatively common trouble code for vehicles that have Variable Valve Timing (VVT). This includes the Buick Rainier.  VVT adjusts the position of the camshaft(s) to maximize the combustion efficiency of the motor. P0014 means that the camshaft position is too far advanced from where it should be in relation to normal operating … Read more

Buick Rainier P0456: Meaning, Causes, How to Fix

One of the most common trouble codes with the Buick Rainier is the P0456 code. This trouble code references a number that is given to you when you plug your Rainier into an OBDII scanner. P0456 Indicates that there is a small leak in the evaporative emission control system. It often appears with or is … Read more