P2049 - OBD Trouble Code

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OBD error code P2049 blinking? Don’t know how to diagnose it? Parts Avatar has it all! Here’s how you can diagnose the error code P2049. The OBD-II code P2049 is also known as the reductant injection valve circuit/open. It can be seen that the diesel exhaust fluid (DEF) aids while converting the remaining exhaust particles to nontoxic gases. Also, for burning those particles completely, the temperature of the exhaust system should be increased. Further, adding an injection of DEF fluid into the exhaust stream brings diesel particulate filter (DPF) helps achieving the required temperature. The system is then enabled to convert toxic NOx to nitrogen, carbon dioxide, and water. Incase, a failure results in the operation of DEF Injector, code P2049 will set.

To reduce the presence of NOx, the exhaust gas recirculation (EGR) systems performs advance steps. Although, one can observe that the modern day larger and more powerful diesel engines fail to comply with the strict federal (U.S.) emission standards with the EGR, diesel particulate filter/catalytic converter, and NOx trap alone. It is interesting to note that, only for this reason the selective catalytic reduction (SCR) systems were invented. These SCR systems perform the function of injecting a reductant compound or a diesel exhaust fluid (DEF) into the exhaust located in the front of the diesel particulate filter, NOx trap, and/or the catalytic converter through the reductant injection valve (solenoid). Thus the accurately timed DEF injection increases the temperature of the filtration element and enables it to perform more efficiently. This enhances the filtration element longevity and allows lesser exhaust emissions to be released in the atmosphere.

What causes this problem with the Reductant Injection Valve Circuit High Bank 1 Unit ?

• Faulty reductant injection valve
• Open or burnt and damaged circuits in the reductant injection valve control
• Deficient DEF in the reservoir
• Poor quality SCR controller/PCM or programming error

1. Reductant injection valve - A damaged reductant injection valve apart from triggering the error code P2049 also affects the overall functionality of the system. Mend or restore your reductant injection valve as soon as possible if you want to save your money from being blown on expensive after repairs.
2. Diesel exhaust fluid pump - Having problems with the diesel exhaust fluid pump? No worries, we have got it all! Tune into Parts Avatar for your new diesel exhaust fluid pump.
3. Exhaust system parts - A faulty exhaust system parts can cause an array of problems including engine surges and an improper shifting. We advise you to get your vehicle speed sensor changed immediately if you want to overcome the problems caused by the error code P2049.
4. Diesel exhaust fluid - A contaminated diesel exhaust fluid can lead to a lot of problems. It also adversely affects the functioning and efficiency of the DEF system parts. Log into Parts Avatar today to get your DEF changed.
5. Diesel particulate filter - Polluted diesel particulate filter can harm the overall performance of the engine along with an error code P2049. Tune into Parts Avatar for top notch diesel particulate filter offered as economical prices.
6. Powertrain control module - Wish to combat the error code P2049? An unsound powertrain control module is likely to invite issues like a poorly running engine, increase in carbon emission, choking, stuttering and stalling of the engine. Well, to avoid these, we recommend a replacement or repair of the powertrain control module before it worsens the condition of the system.
7. Exhaust gas recirculation - Having problems with the exhaust gas recirculation? Well, it is likely to invite problems like a engine stalls and rough idling. Looking for a new one? Don’t you worry, Parts Avatar has it all. Mend or restore your exhaust gas recirculation before it ends up being the root cause behind the error code P2049.

Next important thing you need to know about are the common symptoms for this obd error code P2049 with your fuel volume control:

Common Symptoms

• Decreased engine performance
• Increased amounts of black smoke from vehicle exhaust
• Deteriorated fuel efficiency
• Other codes related to SCR

Wish to correct this error code with your vehicle? Do you know what all you should do to make your car free from this code? Well, don’t worry! We are here to guide you:

• Replace or repair a damaged reductant injection valve
• Amendments should be performed to fix a defective circuit in the reductant injection valve control
• Perform repairs to fix a damaged DEF in the reservoir
• A bad quality SCR controller/PCM should be repaired or replaced immediately. Also, a re programming should be done if required.

If you need any parts to fix this problem you can easily find them with us. Not only that we also have in stock the best in range auto parts and that too at the most budget friendly prices ever online. Whether you need a pcm, dpf, egr, diesel exhaust fluid, exhaust system, def fluid, reductant injection valve you can simply rely on us for quality auto parts.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

For diagnosing code P2049, you will need the aid of a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of vehicle diagnostic information.

You can extract useful diagnostic information from a technical service bulletin (TSB) that matches the vehicle year, make, and model and information related to the engine size, code/s stored, and symptoms displayed.

The best way to begin the diagnosis will be with a visual investigation of the reductant heater system harnesses and connectors. Corroded or damaged wiring and or connectors should be fixed or replaced before proceeding further.

The next step includes hooking the scanner to the vehicle diagnostic connector and restoring all stored codes and relevant freeze frame data. It may be helpful to write down this information prior to clearing the codes and test driving the vehicle until the PCM enters readiness mode or leads to the resetting of the code.

It may prove much more difficult to diagnose this code at the time when it is intermittent, and if the PCM enters the readiness mode. In such a case, it may be necessary for the conditions which caused the code being stored to aggravate so that an accurate diagnosis can be made.

If the code is reset, try to find the source of vehicle information to gain diagnostic flow charts, connector pin out charts,connector face views, and information related to component testing procedures and specifications. This information will be essential to carry on the further steps of your diagnosis.

To test the power supply to the SCR control system the DVOM should be used. In order to prevent misdiagnosis, test fuses with the circuit loaded. If you discover required power (battery voltage) and ground circuits, the scanner should be used to activate the reductant injector valve (solenoid) and test output control circuit voltage. If the voltage falls short of the required mark, it is indicative of the controller being bad or has experienced an error in programming.

The DVOM should be used to test the reductant injection if in case the voltage output circuit is within the specifications. A failure in the valve should be suspected if it fails to meet the specifications.

Common Mistakes When Diagnosing the P2049 Code

Here we have listed a few common mistakes that should be avoided while performing the diagnosis:

• Unsound DEF injector
• Defective powertrain control module (PCM)
• Wiring problem