P0431 is a standard OBDII trouble code, which means that it has the same meaning for the GMC Sonoma as it would any other vehicle. It is closely related to P0430 (which is one of the most popular OBDII codes). Warm Up Catalyst Efficiency → Below Threshold (Bank 2) When it’s the only trouble code … Read more
P0306 is a fairly common trouble code with the GMC Sonoma. It’s and OBD2 code and stands for: P0306 is certainly a cause for concern, and should be considered a threat to the drivability your Sonoma. The nice thing about P0306 is that it’s a cylinder specific trouble code, which makes diagnosing the problems much … Read more
P0411 is a general OBDII trouble code, which means that it has the same meaning for the GMC Sonoma as it would any other car or truck. By definition, the code is letting you know that the ECM has detected incorrect flow in the secondary air injection system. P0411: Secondary Air Injection System → Incorrect … Read more
P0421 is a relatively rare OBDII trouble code. It’s generic, which means it has the same definition for the GMC Sonoma as it would any other vehicle. It is technically defined as “Warm Up Catalyst Efficiency → Below Threshold (Bank 1)”. In layman’s terms, it indicates that your GMC Sonoma’s catalytic converter is not scrubbing pollutants efficiently … Read more
P0506 is a common OBDII trouble code. It is typically triggered when the engine idle speed is lower than the predetermined limit set by the manufacturer. It is a generic code, which means that it has the same meaning for the GMC Sonoma as it would any other vehicle. P0506 Symptoms: Sonoma Most … Read more
One of the most common trouble codes with the GMC Sonoma is the P0496 code. This code number references a number that is given to you when you plug your Sonoma into an OBDII scanner. Below, you’ll find the most common symptoms and ways to diagnose the P0496 in your GMC Sonoma. Good Luck! … Read more
P0500 is a OBDII trouble code that affects the GMC Sonoma‘s Vehicle Speed Sensor (VSS). The VSS sends a signal to the engine’s computer letting it know how fast that the vehicle is going. The Sonoma uses this signal for many vehicle functions. It helps control transmission shifts, ABS, cruise control, the speedometer, and … Read more
P0410 is a generic OBDII trouble code. This means that it has the same meaning for the GMC Sonoma as it would any other vehicle. It is letting you know that there is an issue with the secondary air injection system. P0410: Secondary Air Injection System → Malfunction The secondary air injection system injects air … Read more
The P0440 code is a common trouble code that many GMC Sonoma owners may encounter. It indicates that there is an issue with the truck’s Evaporative Emission Control (EVAP) system. Specifically, the EVAP system is malfunctioning. A variety of causes can trigger the P0440 code, with the most common one being a loose or damaged … Read more
P0403 is a very common trouble code. It is a generic code, which means that it has the same meaning for the GMC Sonoma as it would any other vehicle. It affects the EGR (Exhaust Gas Recirculation System and technically means: P0403: EGR→ Circuit Malfunction A circuit malfunction implies that there is a wiring problem … Read more