Tag Archives: Cobalt

If your Chevy Cobalt has a humming noise at high speed, it can be distracting and, depending on the cause, dangerous. We’ve outlined the most common reasons why a humming noise in your car gets louder with speed. We’ve also provided an audio sample of each issue to help determine …

Dash lights flickering and failure to start is a very common issue that can happen to the Chevy Cobalt. While your first impulse may be to think that there is something wrong with your car’s starter (and it is possible), it’s usually caused by an issue with the battery or …

P0725 is a common OBD2 code that can occur in the Chevy Cobalt. It indicates an issue with the engine speed sensor input circuit (which measures the engine speed at the input shaft and helps the PCM determine when and how hard to shift the transmission). It’s a generic code, …

P0705 is a very common transmission-related trouble code that can occur in the Chevy Cobalt. In layman’s terms, it means that your Cobalt can’t tell what gear you’ve selected, which can have some real consequences on how it drives. It’s most likely caused by a bad Transmission Range Sensor (TRS), …

P015D is a generic trouble code, which means that it has the same definition for the Chevy Cobalt as it would any other vehicle. The code indicates that the Oxygen (O2) sensor on bank 2 is not cycling from lean to rich as fast as it should be. P015D is …

P015B is a generic trouble code, which means It indicates that the Oxygen (O2) sensor on bank 1 is not cycling from lean to rich as fast as it should be. P015B is usually caused by a bad oxygen sensor, but there can also be other causes. P015B Definition: O2 …

P2279 is a generic OBD-II code. It indicates there is a vacuum leak coming from your Chevy Cobalt’s air intake system. While P2279 is a generic code (it has the same definition for the Cobalt as it would any other vehicle made after 1996), repair steps will vary based on …

P0117 is a generic OBD2 code.  It indicates that your Chevy Cobalt’s PCM (powertrain control module) has detected the signal coming from the engine coolant temp (ECT) sensor has a voltage level below its normal operating range. With the ECT sensor, as the voltage level drops, it will appear that …

P0036 is a very common O2 sensor-related trouble code. It’s generic, which means it has the same definition for the Chevy Cobalt as any other vehicle. This code is almost always caused by a bad heated oxygen sensor or wiring issue and is almost always symptom-free. P0036 should NOT be …

P0058 is a not too common and OBDII trouble code that occurs in the Chevy Cobalt. It indicates that the heated oxygen sensor (which we’ll be referring to as HO2S a lot) heater control circuit located at B2S2 is sending a signal to the PCM that is outside of its …