P2045 - OBD Trouble Code

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Wondering on how to solve the error code P2045? No worries, Parts Avatar is here at your service! We have written here all that you need to know about the error code P2045. This OBD-II code signifies that the powertrain control module (PCM) has detected a defect in the reductant injector air pressure sensor circuit. Also, in order to reduce the harmful gases emitted through the diesel particulate filter or the catalytic converter the reductant injector is used.

You can observe that at the time of altering the leftover exhaust particles into harmless gases, the diesel exhaust fluid (DEF) is used. It should be noted that, in order to burn off those particles, an increased temperature in the exhaust system is required. The temperature of the diesel particulate filter is brought to the optimum level through the injections of the DEF fluid into the exhaust system. Only then the system is able to convert the hazardous NOx to nitrogen, carbon dioxide and water. The reductant catalyst (SRC) performs the task of further reducing any NOx that is still present in the exhaust stream. The temperature in the DEF tank is updated to the engine computer (PCM) by the reductant temperature sensor. When an impractical signal is detected by the PCM from the reductant temperature sensor, the code is stored P2045.

What causes this problem with the Reductant Temperature Sensor Circuit High?

• Broken, open or burnt wiring and connectors
• Short circuit in the exhaust gas temperature sensor
• A malfunctioning sensor
• Fall in the back pressure or a severe exhaust leak upstream from the vehicle’ exhaust temperature sensor due to an aftermarket off-road exhaust system

1. Electrical connectors - Defective electrical connectors present throughout the system can cause a failure in many parts in the system and can be the biggest reason behind your empty pocket. Log into Parts Avatar to get your hands on top notch electrical connectors.
2. Exhaust gas temperature sensor - If you find out that there are no misfire codes and a common cause of acceleration stumble is a malfunctioning exhaust gas temperature sensor. So it becomes very important to replace or repair your defective exhaust gas temperature sensor available with us at equitable prices.
3. Diesel particulate filter - A clogged diesel particulate filter can trigger a whole lot of problems with the DEF pump as well as the DEF itself. So what are you thinking? We are just a click away!
4. Powertrain control module - Having problems with the powertrain control module? Well, it can hamper the overall functionality of the system. Don’t you worry, Parts Avatar has it all for you. A faulty PCM could end up being the root cause behind the error code P2045. So get your PCM repaired or replaced now!
5. Exhaust system parts - Now get your error code P2045 fixed with us right away by simply switching to good quality exhaust system parts offered at Parts Avatar. Log in now!
6. Reductant temperature sensor - Love travelling? But hate these halts? Yes, all these halts can just be due to a defect in the reductant temperature sensor. Apart from this it also leads to excessive black smoke emissions. Visit us today for your new reductant temperature sensor now!

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P2045 code by listing out some major symptoms. They are mentioned below as follows

Common Symptoms

• Excessive black smoke emissions (upon acceleration)
• Other than this, the driver may fail to notice any other obvious signs that might have added to the code

Learn the ways with which you can correct this trouble code:

• Repair or replace a damaged exhaust gas temperature sensor
• A malfunctioning sensor should be changed or repaired
• Amendments should be performed to fix a corroded or open wiring and connectors
• Make sure there are no exhaust leakages in the exhaust temperature sensor

However, if you face any issue then we have stocked a wide range of best priced connection,pcm,temperature sensor,exhaust system,diesel particulate filter,exhaust gas,faulty sensor and more to help you out in fixing your car.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2045 code to be stored:

To perform the procedure, you will need an OBD-II scanner and a digital volt/ohmmeter. A visual inspection should be performed of all the wiring and connectors. All the damaged or shorted ones should be repaired or replaced. The codes should be then cleared and the vehicle should be test driven to see if the code returns. This helps in determining whether the code is intermittent or not.

If in case, the code returns, you should continue with the visual inspection of the exhaust gas temperature/pressure sensors and system circuitry. All the wires and connectors located near to the hot exhaust components should be check carefully. If all the exhaust gas temperature/pressure circuitry appears to working in order, you should proceed further with the procedure. Next, the digital volt/ohmmeter should be used to test the resistance of the exhaust gas temp/pressure sensor. Well, it should be noted that particularly the resistance for this sensor should be approximately 150 ohms (though we advise you to refer to the manufacturer’ specifications).

Common Mistakes When Diagnosing the P2045 Code

Here we have listed a few mistakes:

Most common mistake committed is the replacement of the camshaft, wheel speed sensors and crankshaft position sensors. Changing these will not be able to solve the issue. For a precise diagnosis, appropriate diagnostic equipment will be required. All this can be done by yourself or you can also hire a professional mechanic too.