{"id":6435,"date":"2022-10-22T09:43:43","date_gmt":"2022-10-22T09:43:43","guid":{"rendered":"https:\/\/www.motoraudit.com\/?p=6435"},"modified":"2023-10-10T14:49:52","modified_gmt":"2023-10-10T14:49:52","slug":"p0403-code-on-6-0-powerstroke","status":"publish","type":"post","link":"https:\/\/www.motoraudit.com\/p0403-code-on-6-0-powerstroke\/","title":{"rendered":"How to Fix P0403 Code on a 6.0L Powerstroke (Step-By-Step)"},"content":{"rendered":"\n

DTC codes are the easiest way to find specific vehicle problems. These codes are like helping hands while solving a vehicle\u2019s electrical or body parts. But ever thought about what code P0403 means on 6.0 Powerstroke?<\/p>\n\n\n\n

The code P0403 means the engine control module (ECM) has detected a fault in the engine exhaust gas recirculation (EGR) circuit. Weak solenoid connections, defective PCM, shorted or open EGR vacuum control valve, and less power supply to the EGR solenoid are the major causes behind this code.<\/strong><\/p>\n\n\n\n

Fuel odor, flawed EGR system, default code set in the memory, and an illuminated check engine light are the additional symptoms of P0403 DTC code. If you\u2019re in a fix to solve this problem, follow this discussion to find the simple remedies.<\/p>\n\n\n

\"How<\/figure>\n\n\n

What Is P0403 Code On 6.0 Powerstroke?<\/h2>\n\n\n\n

The DTC code P0403 on Powerstroke indicates the problem with the EGR section of the vehicle. But, first, let\u2019s find out the meaning of the symbol and numbers of the P0403 DTC code.<\/p>\n\n\n\n

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  • P<\/strong> = Powertrain, part of the system to move the car ahead<\/li>\n\n\n\n
  • 0<\/strong> = A generic code according to the SAE<\/li>\n\n\n\n
  • 4<\/strong> = It refers to the auxiliary emission control<\/li>\n\n\n\n
  • 03<\/strong> = Specific fault index (in this case, it refers to a problematic ignition system or Misfire)<\/li>\n<\/ul>\n\n\n\n

    You will solve a significant portion of the code if you can confirm the signs of this code in the early stage. Knowing the meaning of the signs will give you a better understanding of finding an easy solution.<\/p>\n\n\n\n

    How Serious Is P0403 Code On 6.0 Powerstroke?<\/h2>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    It\u2019s a serious matter if the P0403 DTC code appears on your car\u2019s dashboard. The appearance of this code means the EGR system is turned off and can\u2019t operate.<\/p>\n\n\n\n

    Find out if the check engine light is ON. Your car won\u2019t pass the emission test if this code is visible on the car\u2019s display. Plus, you\u2019ll face severe issues if you try to speed up your vehicle while driving.<\/p>\n\n\n\n

    When your vehicle fails to pass the emission test, it\u2019s tough to drive. In addition, the police can take legal action against you and fine you for polluting the environment. So, as you can see, this code is terrible news for you and your surroundings.<\/p>\n\n\n\n

    What Causes P0403 Code On 6.0 Powerstroke?<\/h2>\n\n\n\n

    The reasons behind the DTC code P0403 aren\u2019t hard to find. You\u2019ve to inspect the car properly to find out the potential causes that can accelerate the appearance of the code.<\/p>\n\n\n\n

    Here are some crucial causes behind the DTC code P0403 on Powerstroke.<\/p>\n\n\n\n

      \n
    1. The ECM tracks the voltage of the EGR vacuum control solenoid and can identify an open or short circuit at the solenoid.<\/strong><\/li>\n\n\n\n
    2. EGR vacuum control solenoid is shorted or open<\/strong><\/li>\n\n\n\n
    3. A rusty EGR solenoid<\/strong><\/li>\n\n\n\n
    4. Weak solenoid connections<\/strong><\/li>\n\n\n\n
    5. Excess resistance in the PCM<\/strong><\/li>\n\n\n\n
    6. Water invasion in the EGR<\/strong><\/li>\n\n\n\n
    7. Defective PCM<\/strong><\/li>\n\n\n\n
    8. Less supply voltage to the EGR solenoid<\/strong><\/li>\n<\/ol>\n\n\n\n

      Other Symptoms Of Getting P0403 On 6.0 Powerstroke?<\/h2>\n\n\n\n

      You can find a resolution faster if you know about the different characteristics of this DTC code. These signs aren\u2019t hard to find. You can detect them just by observing the responses of your car.<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      Let\u2019s find out these symptoms of code P0403 on 6.0 Powerstroke.<\/p>\n\n\n\n

        \n
      1. Check the Engine light On<\/strong><\/li>\n\n\n\n
      2. Faulty EGR system<\/strong><\/li>\n\n\n\n
      3. Engine stall problem<\/strong><\/li>\n\n\n\n
      4. Bad driving experience<\/strong><\/li>\n\n\n\n
      5. Code set in the ECM memory<\/strong><\/li>\n\n\n\n
      6. Engine ignites early in acceleration<\/strong><\/li>\n\n\n\n
      7. Fuel odor coming out of the exhaust<\/strong><\/li>\n<\/ol>\n\n\n\n

        How To Fix P0403 Code On 6.0 Powerstroke?<\/h2>\n\n\n\n

        It\u2019s pretty elementary to fix the P0403 code on 6.0 Powerstroke. However, tools like an electric screwdriver, crowfoot pry bar, ohm meter, and an OBD-II scanner helps to crack the code easily.<\/p>\n\n\n\n

        Replace the open EGR solenoid and use a new connector to the EGR vacuum control solenoid to solve it in your home.<\/p>\n\n\n\n

        But it\u2019s tough to fix the code if it gets complicated. Only an experienced mechanic can help you to decipher the code. Here\u2019s how a mechanic diagnoses and improves the situation.<\/p>\n\n\n\n

        1. Scanning And Data Inspection<\/h3>\n\n\n\n

        A mechanic will scan the code and inspect the received data to confirm the code before fixing it.<\/p>\n\n\n\n

        2. Clearing Codes<\/h3>\n\n\n\n

        Next, they\u2019ll clear the engine codes. Then a test drive is performed to cross-check if the code comes back.<\/p>\n\n\n\n

        3. Visual Inspection Of Wirings<\/h3>\n\n\n\n
        \"\"<\/figure>\n\n\n\n

        After cross-checking and clearing the codes, a mechanic looks for loose wirings and connections between the EGR control solenoid and the EGR temperature sensor.<\/p>\n\n\n\n

        4. Checking EGR Valve<\/h3>\n\n\n\n
        \"\"<\/figure>\n\n\n\n

        Mechanics disconnect the EGR valve vacuum control solenoid for a short time. Then inspect the solenoid to discover faults.<\/p>\n\n\n\n

        5. Looking For Rusty Joints<\/h3>\n\n\n\n

        They\u2019ll look for corrosion in the connectors and wirings. The mechanic will replace the rusty wirings and connectors with the new ones if there\u2019s any rust in the connectors.<\/p>\n\n\n\n

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