Using a Scan Tool to Diagnose Chevrolet Trouble Codes

Using a Scan Tool to Diagnose Chevrolet Trouble Codes

If you’ve got a Chevy, you might be wondering what these codes mean and how to solve them. This article will explain what PDTCs are and how to diagnose them with a Scan tool. Listed below are some of the more common codes and what they mean.

Keep reading for more tips on diagnosing a problem with your car. After you’ve finished reading this article, you should be well-equipped to handle troubleshooting a Chevy.


The P2122 error code can be caused by several factors, such as a faulty component or a loose wire. A faulty component or wire can affect the performance of other parts of your vehicle. It is important to take your vehicle to a mechanic to get a diagnosis, since an incorrect repair can cost you more money and hassle. Listed below are some things to check before you get a mechanic to fix your car.

This code indicates that there is low voltage at the throttle position sensor. A low voltage in the TPS can cause a forced shut-down of the car, or it can result in an idle speed that is unable to produce power. You should check the specifications for your vehicle before attempting to repair the problem. If your Chevrolet Silverado has low voltage, the problem could be with the TPS. To fix the problem, run a new wire from the PCM to the TPS.

The Chevrolet P2122 trouble code can also be caused by a faulty throttle position sensor or a bad accelerator pedal. This generic code is typically caused by a low voltage level in the throttle position sensor (TPS). The voltage levels should be between 0.17 to 0.20 volts. If this code appears on your car, contact your car dealer as soon as possible to get your vehicle fixed. The problem may be minor, or it could be more serious than you thought.

If you suspect that the throttle position sensor is the cause of the P2122 trouble code, you should first check the throttle position sensor. This is an important component of the car that controls shifting gears. If the sensor fails, your car may not start. You can have a mechanic replace it or repair the problem. These are some of the most common causes of Chevrolet P2122 trouble codes. They are easy to fix and can save you a lot of money.


If you’ve seen this code before, it’s probably because you have an issue with your traction control system or engine control module. It could be caused by a bad electronic brake control module or a poor electrical connection to the EBCM. If this code is showing up on your dashboard, it’s time to fix it. Follow these steps to fix your C0242 code. If you don’t fix this problem, it could cost you more money down the road.

The C0242 code is an OBD-II diagnostic trouble code for a problem with the Manifold Absolute Pressure/Barometric Pressure Circuit. While this may sound alarming, it’s important to note that the problem might not be something that needs to be replaced. Check your vehicle’s manual for possible causes of this error code, and then follow the necessary testing to find out why it is occurring. Then, your next step will be to replace any faulty parts.


Smog Check inspections will omit vehicles with PDTCs. These codes indicate a malfunction in the vehicle’s emissions control system. These devices are stored in the OBD system. The presence of a PDTC indicates that the malfunction is still active. If a vehicle fails an Smog Check inspection, it will be deemed as having a faulty emissions control system and must be repaired. A vehicle with a PDTC will fail a Smog Check inspection if it fails the test.

In order to reset the check engine light, start your car and let it run for a second. You should then turn off the vehicle and re-start it. You should repeat this procedure if the light does not go away after the specified number of warm-up cycles or 200 miles. The PDTC is not always indicative of a more serious problem. Usually, it is not necessary to replace the entire vehicle. Moreover, you can use a specific monitor to check the status of the engine.

A code such as P1404 indicates that your EGR valve is not working properly. If you can’t locate the EGR valve, you may need to replace it. This is a fairly expensive repair and can take anywhere from one hour to a day. In addition, you may also notice stalling when the engine is running. The problem could be caused by the fuel system or the transmission, and it can be triggered by a few other things.

If you’re concerned about the possible causes of a PDTC, you can refer to the National Highway Traffic Safety Administration list of vehicle codes. Many of these codes are emissions-based and indicate a problem in the EVAP system. A small leak in the EVAP system may cause the P0455 code. If the EVAP system is leaking a large amount of gas, then the U0416/68 code could be the culprit.

Scan tool

A Scan tool for Chevrolet trouble codes can tell you a lot about your car’s problem. The number that appears on the display is not a diagnosis but a pointer to further diagnostics. In some cases, the error code may indicate a faulty circuit but not necessarily what is causing the issue. It is a good idea to write down the code and research it manually before attempting to fix it.

To check these codes manually, you can try to reset the Check Engine Light on your car. Most models of cars have a reset button on their dashboard near the odometer or left-hand steering wheel lever. But remember that clearing codes with a scan tool is not the ideal solution as you may have multiple codes. If the error code persists, you’ll need to go for further diagnostics. If this still fails to fix the problem, you’ll have to spend more time repairing your car.

If you’re serious about fixing your car, you should invest in a specialized scan tool. These tools use a technology known as Controller Area Network (CAN) to communicate between engine control modules. CAN is a high-speed data link that allows multiple control modules to share information. In general, CAN-compliant scan tools are required for some 2003 and newer models. You can buy a high-quality scanner for less than $200.

Besides using a scan tool, you can also use an OBD-II plug-in diagnostic device. This tool connects to the diagnostic connector located under the instrument panel near the steering column. The tool then reads the codes and gives you the meaning of the codes. The tool can then help you fix your car problems. There are several types of codes for Chevrolet, and some are universal. For example, codes for “Check Engine” and “check engine light” are the same across different brands. The code reader has to support both types of codes.

Meaning of chevrolet trouble codes

If you’ve recently purchased a new or used Chevrolet, you’re probably wondering, “What do the trouble codes mean?” These codes are indicators of problems within the vehicle. OBDII is the diagnostic system installed on all vehicles since 1996. Each model has different codes and methods for repairing the problems are unique to that vehicle. Trouble codes are generated automatically by the car’s computer and can be read using special diagnostic equipment.

To read your Chevrolet vehicle’s trouble codes, you need to have an OBDII scanner. A scanner that uses this diagnostic port can read the codes from the ECU. To get the codes from your car, plug in the diagnostic connector. The connector is located beneath the steering wheel and may have a black plastic cover. It will flash “code 12” on the dashboard. You should then look in the car’s trouble code table to determine the problem.

A typical DTC contains a two-digit code that indicates what system is malfunctioning. There are three generic codes and two unique ones. Common codes are created to meet regulations, while unique codes are created to incorporate more features. A generic code will still be helpful because it describes the problem. For instance, a P0219 code is a common code, which indicates a problem with the powertrain. The first digit, the green digit, tells the technician if it’s a generic code or a more specific problem.

When the check engine light appears on a Chevrolet, it usually means there is a problem with the engine or emissions. It will stay on for a few seconds, but will turn off after a few minutes. The check engine light may also be called Malfunction Indicator Lamps. The light will go off once the problem is fixed. A few other causes of the Chevrolet check engine light are:

Using a Scan Tool to Diagnose Chevrolet Trouble Codes
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