GMC Sonoma P0841: Meaning, Causes, + Diagnosis

P0841 is a relatively common trouble code.  While your GMC Sonoma’s check engine light will come on, this particular code indicates that there’s something wrong with the transmission, specifically the transmission fluid pressure sensor circuit. It’s a generic code, so P0841 has the same definition for any vehicle made for the 1996 model year and … Read more

GMC Sonoma P0894: Meaning, Causes, & Diagnosis

P0894 is a somewhat common DTC trouble code.  It indicates that your GMC Sonoma’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 Sonoma as any other vehicle), it is far and away most common on … Read more

GMC Sonoma P0882:  Meaning, Causes + Diagnosis

P0882 is a generic DTC trouble code, which means it has the same meaning for the GMC Sonoma 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

GMC Sonoma P0868: Meaning, Causes, & Diagnosis

P0868 is a generic DTC code, which means it has the same definition for the GMC Sonoma as it would any other vehicle.  This particular code indicates that the transmission fluid pressure is below the minimum operating specs. If your Sonoma has P0868 the first thing you should do is check the transmission fluid.  If … Read more

GMC Sonoma P0715: Symptoms, Causes, & Diagnosis

P0715 is a generic, and somewhat rare OBDII trouble code.  If your GMC Sonoma 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

GMC Sonoma P0688: Meaning, Causes, + Diagnosis

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 GMC Sonoma. The most common causes of P0688 are a bad PCM power relay or a wiring issue between the PCM and … Read more

GMC Sonoma P0685: Meaning, Causes, + Diagnosis

P0685 is a somewhat rare OBDII trouble code. It’s a general code, so it has the same meaning for the GMC Sonoma 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 Sonoma not to start, which leaves … Read more

GMC Sonoma P0661: Meaning, Causes, & Diagnosis

P0661 is a relatively rare OBD2 trouble code.  It indicates that the electrical reading coming from your GMC Sonoma’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

GMC Sonoma P0660: Meaning, Causes, & Diagnosis

P0660 is a somewhat common OBDII code.  It’s generic, so it has the same meaning for the GMC Sonoma 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

GMC Sonoma P0627: Meaning, Causes + Diagnosis

P0627 is a somewhat rare and generic OBD2 trouble code, which means that it has the same meaning for the GMC Sonoma as it would any vehicle made for the 1996 model year and up. In the Sonoma, P0627 is most commonly caused by a wiring issue, bad fuel pump, or defective CAN bus.  P0627 … Read more