Error Code P0142: What It Means & What To Do?

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Is your vehicle’s PCM/ECM flashing OBD error code P0142? Is your vehicle showing decline in fuel efficiency and increase in exhaust tailpipe emissions? If yes, then we are quite certain that you are facing obd error code P0142. Willing to know more about it? Read through our subsequent sections to have a better understanding for the same.

OBD error code P0142 is the error code that your vehicle PCM’s sets when it detects a failure of the oxygen sensor or the information which is received from the sensor.

You must be aware that the purpose of the O2 sensor is to measure the oxygen content in the emitted exhaust gases. For the PCM this information is quite critical in order to maintain the fuel efficiency of the vehicle. In order to understand this problem, it is essential that you know few common causes too.

What causes this problem with the O2 sensor circuit (Bank 1 Sensor 3)?

• Damaged or defective oxygen sensors
• Voltage or shorted issues
• Damaged wires due to heat from the exhaust system components
• Holes in the exhaust system near the oxygen sensors

1. Powertrain Control Module - Chances are that if you are facing OBD error code P0142 your PCM itself is damaged and is demanding for a quick change. So, what are you waiting for? Buy a new one with us now.
2. Spark Plugs - Looking for spark plugs to fix this problem, all you need to do is to browse through our website. You can find the most budget friendly spark plugs with us.
3. Engine Control Module - If you need to undergo ECM replacement and are Worried about the cost then you no longer need to worry about that as we have for you best priced ECM’S in stock.
4. Fuel Pump - We have in stock high end fuel pumps for all make and models for you. So, what are you waiting for? Make the best parts yours today.
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6. Diagnostic Tools - If you need any of the DIY diagnostic tools, to diagnose the issues with your cars. You can find them all with us.
7. Oxygen Sensor - If you have oxygen sensor replacement on your list, then you have arrived at the right place. We have in stock for you high end oxygen sensors from top brands like Denso, Bosch and many more.
8. Mass Air Flow sensor - Looking for top quality MAF sensor? If YES, you can find them with us for all makes and models.
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Every problem comes with its few common and specific symptoms that helps us to detect the issue. In order to correct any oth the problem you need to work on understanding its symptoms first and we are her to help you out in understanding OBD error code P0142 symptoms.

Common Symptoms

• Illumination of Malfunction Indicator Lamp, also known as MIL
• Sudden increase in tailpipe emissions
• Fall in fuel economy or MPG
• Abnormal drivability issues
• Problem with the downstream catalyst O2 sensor 3 for bank 1

Definitely the next step after understanding your vehicle’s problem is to fix it and order to correct this OBD Code P0142 you will need to undergo the following steps and might need the following parts.

• First step is to check and replace the damaged exhaust parts, if any leak is detected
• Next, you should repair and replace the wirings or connector to the oxygen sensors for bank 1 sensor 3
• Last but not the least step is to replace the defective O2 sensors

If you need any part to fix this issue such as oxygen sensors, exhaust components or for that matter any part then you can easily browse through our website and get your trophy parts in no time.

In order to be that DIY guy and to be able to diagnose your vehicle’s problem yourself you will need to keep in mind the following steps

• First of all, you should check the electrical connections to the O2 bank 1 sensor 3
• After that you will have to check the exhaust system for any leaks before the O2 sensor
• Next, undergo a scan to see if codes P0143 and P0144 are present, or if the problem is intermittent, and can be ignored unless the problem returns

Common Mistakes When Diagnosing The P0142 Code

Few of the common mistakes that you can commit while diagnosing this P0142 generic obd codes are listed as follows:

• Make sure to scan for codes P0143 and P0144, and repair these codes first to complete the diagnosis
• Also, you must check for any exhaust leaks or damages to the exhaust