P0894 is a somewhat common DTC trouble code. It indicates that your Chevy Impala’s transmission may be slipping. It does not specify what part of the transmission is the problem. While P0894 is a general diagnostic trouble code (same definition for the Impala as any other vehicle), it is far and away most common on … Read more
P0882 is a generic DTC trouble code, which means it has the same meaning for the Chevy Impala as it would any other vehicle. While this code sets the check engine light, it is actually warning you of an issue with the TCM transmission control module, specifically that the power input signal is too low. … Read more
P0868 is a generic DTC code, which means it has the same definition for the Chevy Impala as it would any other vehicle. This particular code indicates that the transmission fluid pressure is below the minimum operating specs. If your Impala has P0868 the first thing you should do is check the transmission fluid. If … Read more
P0715 is a generic, and somewhat rare OBDII trouble code. If your Chevy Impala has P0715, it indicates there is a communication error with the sensor that measures transmission input speed. Common Causes: A bad transmission speed sensor, shift solenoid, wiring issues, and even low/no transmission fluid can all cause P0715. P0715 Definition: Input/Turbine Speed … Read more
P0688 is a relatively rare OBD2 trouble code. It’s a generic code, meaning that it has the same definition for any vehicle made for the 1996 model year and up. This includes the Chevy Impala. The most common causes of P0688 are a bad PCM power relay or a wiring issue between the PCM and … Read more
P0685 is a somewhat rare OBDII trouble code. It’s a general code, so it has the same meaning for the Chevy Impala as any other vehicle. It indicates that the circuit that provides power to the PCM is not functioning properly. Most of the time, P0685 will cause your Impala not to start, which leaves … Read more
P0661 is a relatively rare OBD2 trouble code. It indicates that the electrical reading coming from your Chevy Impala’s intake manifold tuning valve control circuit (on the bank 1 side) is below its specified operating range. While P0661 is a generic code, so it has the same definition for all vehicles. P0661 Definition: Intake Manifold … Read more
P0660 is a somewhat common OBDII code. It’s generic, so it has the same meaning for the Chevy Impala as it would any other vehicle made for the 1996 model year and up. This code indicates that there is an issue with the bank 1 side of the intake manifold valve tuning control circuit. Common … Read more
P0627 is a somewhat rare and generic OBD2 trouble code, which means that it has the same meaning for the Chevy Impala as it would any vehicle made for the 1996 model year and up. In the Impala, P0627 is most commonly caused by a wiring issue, bad fuel pump, or defective CAN bus. P0627 … Read more
P0621 is a generic OBD2 code, which means that it has the same meaning for the Chevy Impala as it would any other vehicle. However, it can be challenging to diagnose due to the necessity of removing the instrument cluster. OBD2 P0621 indicates an issue with the circuit that controls the generator lamp, which is … Read more