P044A OBD Error Code: Problem & Solutions

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Is your EGR, “C” sensor defective? Does your vehicle stand still as the EGR pintle is stuck? Then you are more likely to experience OBD error code P044A in your vehicle. OBD44A is a general type of powertrain diagnostic trouble which includes all models and makes, 1996- newer. However, there are a few steps that vary depending on the type of vehicle.

Introducing a measured amount of exhaust gas into the intake manifold is the main purpose of the EGR valve. It maintains the head temperature of the cylinder below 2500 degrees-F. When the temperature rises above 2500- degrees F, it will form the Nitrates of Oxygen (Nox) which is responsible for the formation of atmospheric pollution and smog. The electronic control module (ECM) or the Powertrain control module (PCM) which is the controlling computer will detect either a non- existent, low or high signal voltage. EGR helps in reducing the emissions which in turn reduces the combustion temperature. If the exact amount of flow which is requested from the EGR is not detected by the engine control module, then the error code P044A will be set.

What causes this problem with the Random/Multiple Cylinder Misfire?

• Damaged or faulty EGR sensor “C”
• Fault in the wiring joints to the sensor
• Either the EGR pintle is stuck in the closed position or the presence of carbon is stopping it from opening
• Insufficient amount of vacuum to the EGR sensor
• Damaged EGR solenoid
• The position of the EGR sensor is damaged
• Faulty differential
• Pressurized feedback from the EGR sensor

1. Wiring harness - If the joints of the wires have suffered any damages, then they have to be replaced immediately.
2. EGR Position Sensor - Check for the position of the EGR sensor. Are they damaged? Are there any faults? Then get them replaced right away.
3. EGR Solenoid - Are you looking for the right place to replace your damaged EGR solenoid. Then, Parts Avatar is the right place as it has the replacement parts for every model.
4. Electrical circuit - A fault or damaged electrical circuit can cause disturbance in the engine system. Replace or repair them at once.

Well, if you are looking to know about the common symptoms related to this error code P044A, we are have worked out a small list to help you discover this error code with your vehicle.

Common Symptoms

• If the light of the service engine is well let, then the OBD code P044A will be set. Also, you may also see a second code which relates to the fault in the EGR sensor. Low sensor voltage is related to the error code P044C and High voltage is related to the error code P044D.
• The vehicle will stay idle or do not start if the EGR pintle is stuck and partly open.
• At times, there might be no symptoms at all or you will hear a sound of ping from the detonation when it is under a high or low RPM.

Here are some ways with the help of which you will be able to correct the OBD Code P044A.

• Replacement of the EGR valve

Parts Avatar Canada is here to solve all your issues related to car parts. We have stocked a wide range of best priced Wiring Harness, EGR Position Sensor, EGR Solenoid, Electrical Circuit and a lot more to help you out in fixing your car.

In order to diagnose the Engine error Code P044A, you must have a few tools and equipment. Also, you have to check if there is any fault in your engine. Some of them are mentioned below:

• Recirculation of exhaust from the exhaust to the intake manifold is one common thing with all the EGR valves. Apart from the EGR, they vary in their methods for regulating the opening and sensing the pintle and its position. The common problem which accounts for the majority of the failure in the EGR system are as described. The wiring joints or the failure of the sensor requires service manual in order to define the correct wire identification and procedure for diagnosing. You must also know that the wires differ from one manufacturer to other and computers do not recognize them correctly if a wrong wire is found. If you examine the wrong wire and send in excessive voltage through the input terminal of the computer sensor, then the computer will be fried. At the same time, if you disconnect the wrong wire, the computer will lose its programming which causes the failure of the engine to start again. It can be set alright only when the dealers reprogram the computer.
• The “B” circuit malfunction is indicated by the code P044A and so, check the EGR sensor connector if there are any corrosions, loose connections, bents or any pushed out terminals. Clean the corrosions and reset the connector.
• Remove both the electrical sensor and the EGR. Check if there is any coking in the intake of EGR or the exhaust. In order to make the pintle move up and down smoothly, you have to clean the coking.
• If there are any defects in the vacuum line from the EGR to the solenoid, then you have to replace them.
• Check for corrosion or defects in the solenoid electrical connectors.
• If you own a ford, then you have to track the 2 vacuum hoses from EGR to the differential pressure feedback of EGR sensor which is in the rear side of the manifold.
• Check if there are any corrosions in the 2 pressure hoses. An experienced mechanic will hose plug it with carbon from the exhaust. Clean the hoses of corrosion with the help of a small pocket screwdriver and the sensor will begin to function again. 

Common Mistakes When Diagnosing the P044A Code

• Failure of the EGR valve
• Fault in the powertrain control module
• Problem with wires