P20CE OBD Error Code: Problem & Solutions

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Wondering on how to diagnose the error code P20CE? Here’s how you can easily solve the error code with Parts Avatar. This is a generic OBD-II code powertrain control module (PCM) failure that is also known as a exhaust aftertreatment fuel injector "A" control circuit high. It should be noted that the diesel exhaust fluid (DEF) is employed to aid while converting leftover particles to harmless gases. For burning the particles, an increased temperature in the exhaust system is required. To achieve the optimum level of temperature from the diesel particulate filter, DEF fluid is injected into the exhaust stream. Then the system converts the hazardous NOx to nitrogen, carbon dioxide and water. The code P20CE is stored when the DEF injector fails to function accordingly.

One can locate the exhaust fuel addition injector assembly on the outlet of the turbocharger sub-assembly. The feed pump is built in the supply pump assembly that transfers the low-pressure fuel to the exhaust fuel addition injector assembly. According to the control signal transmitted by the engine control module (ECM), the exhaust fuel addition injector assembly adds the fuel. This injector in further utilized for two different controls known as the particulate matter (PM) forced regeneration and PM reduction.

What causes this problem with the Exhaust Aftertreatment Fuel Injector A Control Circuit High?

• A damaged exhaust aftertreatment fuel injector
• The exhaust aftertreatment fuel injector harness loose or short circuited
• A bad electrical connection in the exhaust aftertreatment fuel injector circuit

1. Powertrain control module - Tensed? But don’t know the reason behind all these complications? A damaged powertrain control module illuminates the check engine light and causes engine glitches etc. We advise you to get your defective PCM changed now by simply logging into Parts Avatar.
2. Diesel exhaust fluid pump - Having problems with the diesel exhaust fluid pump? It can also lead to problems with equipment, including engine de-rating or shut-down. So to prevent any such problems, change or repair your diesel exhaust fluid pump right away. Don’t you worry, Parts Avatar has it all. Tune in now!
3. Exhaust aftertreatment fuel injector - A distorted exhaust aftertreatment fuel injector can end up being the chief host inviting the error code P20CE. In addition to the code, it also leads to problems with the overall functioning of the engine. So replacing one can be one of the wisest decisions to avoid a problematic system.
4. Fuel injector - Can’t start your vehicle? Failed emission? Poor idle? Can’t figure out the reason behind it? It is due to your faulty fuel injector. Change or repair it now from Parts Avatar if you want to get rid of all these problems.
5. Diesel particulate filter - Hate the halts? A jammed and dirty diesel particulate filter leads to problem with the functioning of the cooling fans, a slight increase in the fuel consumption and the engine performance. Log into Parts Avatar for your new diesel particulate filter available at just the right prices.
6. Ohmmeter - Fearing the error code P20CE? Well, we just know how to solve the error code accurately. All you need is a good quality ohmmeter available at Parts Avatar. Log in now!
7. DEF injector - Damaged DEF injector? You are likely to face problems with the engine performance and poor fuel efficiency too. So we advise you to get your DEF injectors changed or repaired as soon as possible. Log into Parts Avatar for your new DEF injector.

For us our customers are everything, and that’s why we will help you to diagnose P20CE code by mentioning some important symptoms below:

Common Symptoms

• A significant decrease in the engine performance
• Excessive black smoke emitting from vehicle exhaust
• Fall in the fuel efficiency
• Numerous EAS/SCR related codes

After you know the symptoms of your vehicle’s problem, it becomes easy to detect it and get started with solving it. So, next on our list is few common steps to correct this issue with your vehicle’s:

• Repair or replace the damaged exhaust aftertreatment fuel injector
• All the corroded or loose harness in the exhaust aftertreatment fuel injector should be mended or restored
• Mend or restore a bad electrical connection in the exhaust aftertreatment fuel injector circuit

Apart from this, you might need to replace other damaged parts too like PCM, diesel exhaust fluid, exhaust aftertreatment fuel injector, fuel injector, diesel particulate filter, EAS, ohmmeter, DEF injector, automatic transmission module and more. You can easily find all these parts with us. Not only that you can get these parts shipped to your door free, if your cart value happens to exceed $99.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P20CE code to be stored:

• To start with the diagnosis, all you need is a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of vehicle specific diagnostic information
• It is advised to locate a technical service bulletin (TSB) that parallels the vehicle year, make/model as well as the engine size, code/s stored, and symptoms exhibited as it helps extracting helpful diagnostic information
• A thorough visual inspection of the EAS wiring harnesses and connectors should be performed. All the short circuited or defective wiring or connectors should be mended or restored before proceeding further
• Next, the scanner should be connected to the vehicle diagnostic connector in order to restore all stored codes and useful freeze frame data. All the information should be written down before the codes are cleared
• Perform a test drive of the vehicle until the PCM enters the readiness mode or the code is reset. If in case, the PCM enters the readiness mode the code is intermittent (quite challenging to diagnose) and may need to worsen before an accurate diagnosis can be made.
• The code is intermittent if the PCM enters the readiness mode at this time and may be much more difficult to diagnose if this is the case. The conditions which contributed to the code being stored may need to worsen before an accurate diagnosis can be made.
• To perform the next step of the diagnosis, you may require the vehicle information source in order to attain the diagnostic flow charts, connector pin-out charts, connector face views as well as component testing procedures and specifications, if the code resets immediately. Also, the vehicle information source should be used to mark the exact location of the EAS fuel injector A.
• The DVOM should be employed to probe (voltage drop) the power supply to the EAS control system. All the fuses installed should be checked with the circuit loaded in order to avoid any mistakes. If you find the appropriate power (battery voltage) and ground circuits, use the scanner to actuate the EAS fuel injector (solenoid) and examine the output control circuit voltage.
• A bad controller (even due to a programming error) should be suspected, if the voltage is inadequate. And if the voltage output circuit falls within the specified parameters, the DVOM should be used to probe the EAS fuel injector. If it fails to function according to the manufacturer’ requirements, it should be checked for any damages.

Common Mistakes When Diagnosing the P20CE Code

Here we have listed all the mistakes that should be avoided while diagnosing the error code P20CE:

• A failure in the DEF injector
• A jammed powertrain control module (PCM)
• Wiring issues throughout the system