P0402 is an OBDII trouble code that’ll pop up in the Chevy Cobalt. It has to do with the emissions system and stands for: P0402: EGR → Excessive Flow Diagnosis The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. The amount of gas cycled … Read more
With the Chevy Cobalt, P0404 is going to have the same meaning as it would in any other vehicle. It’s a generic powertrain code that stands for: P0404: EGR Circuit → Range/Performance While there are several issues that can throw the P0404 code in the Cobalt, the most common issue is either going to be … Read more
The Chevy Cobalt utilizes a crankshaft position sensor in order to regulate the engine timing. This sensor uses a reluctor to gauge the position of the crank. When the Cobalt’s ECM determines that there is an issue with the signal coming from this sensor, it’ll throw the P0335 trouble code. P0335 Symptoms: Chevy Cobalt … Read more
P0138 is a common OBDII code that occurs in many vehicles, including theChevy Cobalt. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself There are also some less likely problems … Read more
P0133 is a common OBDII code that occurs in many vehicles, including theChevy Cobalt. The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage levels. The O2 sensor is responsible for helping the ECM meter oxygen levels in the exhaust in order to … Read more
P0132 is a common OBDII code that occurs in many vehicles, including the Chevy Cobalt. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. The air fuel sensor stays in rich biased mode for too long. There are also some less likely problems that can … Read more
The P0131 code is an OBD-II diagnostic trouble code that indicates low voltage in the Chevy Cobalt’s Oxygen (O2) sensor circuit for Bank 1, Sensor 1 (B1S1). This sensor plays a crucial role in maintaining optimal engine performance by detecting the air-fuel ratio in the exhaust, then sending this data to the Cobalt’s engine control … Read more
P0330 is a powertrain OBDII trouble code that has the same meaning for the Chevy Cobalt as it would any other vehicle. By definition, it means that the vehicles ECM/PCM isn’t getting the proper signal from the knock sensor. Clearing this code typically requires a new knock sensor. The second most common cause is … Read more
P0130 is a very common OBDII code that occurs in the Chevy Cobalt. It is typically caused when the Oxygen Sensor voltage is not within normal operating conditions. Chevy Cobalt P0130 Symptoms Typically, the only symptom of P0130 is going to be the service engine soon light. In some cases, there can be other symptoms … Read more
P0150 is a very common OBDII code that occurs in the Chevy Cobalt. It is typically caused when the Oxygen Sensor voltage is not within normal operating conditions. Chevy Cobalt P0150 Symptoms Typically, the only symptom of P0150 is going to be the service engine soon light. In some cases, there can be other symptoms … Read more