Error Code P2064: What It Means & What To Do?

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A code P2064 being stored asserts that the powertrain control module (PCM) has found way too much abundance of voltage inside the control circuit particularly for the reductant/regeneration supply pump.

Discerning catalyst reduction systems (SCR) inject a reductant composite or diesel exhaust fluid (DEF) straight into the exhaust affront of the diesel particulate filter, including the NOx trap, and/or the catalytic converter by way of the reductant injection valve, also called solenoid. The exact timing of the DEF injection lifts up the temperature of the filtration component and enables it to conduct effectively more so. It upgrades the filtration component lifespan and enables litter toxic exhaust fumes to be emitted into the earth’s air. The whole SCR system is inspected and managed by either the PCM or an independently operated controller that interconnects with the PCM. Whichever way it’s done, the controller inspects the O2, NOx, and exhaust temperature sensors, including other inputs, to find out the right timing for the DEF injection, which is a reductant. The exact DEF injection is needed to conserve exhaust temperature within adequate parameters and make the most effective use of a contamination filtration. The reductant/regeneration supply pump is used to put stress on the DEF within the liquid reductant system for it to be in service, whenever needed. The Supply pump voltage is inspected by the PCM for constant shifting and percentage in load. The PCM also inspects a pressure sensor or more within the reductant supply system to find out if the system is leaking. If the PCM finds a level of voltage within the reductant/regeneration supply pump control circuit that overreaches acceptable parameters, this will store a code P2064 and might illuminate a malfunction indicator lamp (MIL). Many ignition patterns that have a failure might be needed to illuminate for a MIL.

What causes this problem with the Reductant/Regeneration Supply Control Circuit High?

• Faulty reductant supply pump (exceeding)
• Open or shorted circuits within the reductant supply control
• Poor SCR controller/PCM or programming fault

1. Engine Control Module - The Engine Control Module (ECM) might fail if there is damage or corrosion that extends to the interior wiring condition inside the injector wiring harness or the sensor wiring harness, which can result in producing a short inside the ECM, or corrosion can access the ECM and flow in past the wiring harness. This can occur even when being in contact with a vast range of elements that surrounds the vehicle’s environment.
2. Powertrain Control Module - Abnormal engine actions could determine a bad or failing ECM.
   A faltered computer might lead to the vehicle to unpredictably stall or fail to start. The symptoms may come and go, but also will not display any signs of sequence in their reoccurrence or extremity. Problems with engine operation are even a possibility in association to the ECM. If the ECM is dealing with any problems, it may resist the timing and fuel conditions of the engine, which can negatively put an effect on the vehicle’s operation. A failed ECM might lead to the vehicle facing with a decrease in fuel efficiency, power, and speed. A bad ECM could lead to a vehicle that fails to start or struggles to start once more. If the ECM is failing altogether, the vehicle will be left without engine power control, so it will fail to start or run as an outcome. The engine could still be cranking, but without the critical inputs from the computer, it will fail to start completely.
3. Diesel Exhaust Fluid - As the vehicle runs dry of Diesel Exhaust Fluid (DEF), the system actually allows it to run dry of DEF and reduces the engine's electrical surge, so then a solid red warning will be displayed and the vehicle acceleration will be limited to 5 mph, until this refills the DEF tank. Since DEF doesn’t come with any preservatives, it does come with a shelf life. As a matter of speaking, DEF has a lengthy shelf life, and it can usually be stored for about to a year without any signs of problems.
4. Diesel Particulate Filter - The most evident and maximal sign you will see in a clogged DPF is a DPF warning light that is be displayed on your dashboard, making you alert that it needs to revitalize, this will clear it out separately. You will see other indicators when dealing with a plugged DPF: You can notice a lack of power inside your engine. The DPF light will be shown on your dashboard. The DPF that is revitalizing will keep on failing, whether in a passive or active mode. There is a strong odor of diesel. Your vehicle appears to be emitting too much abundance of smoke. The oil rate is increasing. You’ve noticed a hike in fuel consumption. In other cases, when both passive and active revitalization is failing, another light could illuminate your dashboard, to make you aware of this case and you will need to visit an experienced mechanic to clean out your DPF. We highly consider that you clean out your DPF rigorously and efficiently, so that it takes out any trace of soot and ash. Conserving a clean DPF, we make sure to use only the most updated advanced technology in cleaning out your DPF, so it will be conducting efficiently as ever before.
5. Reductant Pump - Errors in the DEF system that results in setting a code, could lead to a vehicle performing in a derate mode that restricts both engine power and speed. Before taking out any DEF system part for an associated code, make sure to read through the factory diagnostic steps, and be well alert of the stability of wiring and connectors to prevent needing to replace the part. It is crucial to replace the DEF pump to assure that the diesel emission fluid has not been polluted with petroleum or diesel fuel. Polluted fluid will result in a very fast failure of the new pump assembly.
   In addition, it is also very crucial to clean out the top surface of the DEF tank and area that surrounds the top surface of the pump, which comes with the sending unit prior to taking out any parts. Dirt matter that accesses the DEF system will also result in an instant failure. Make sure to never use any petroleum produce, especially grease or oil, to lubricate O-rings and seals within the DEF system. It is highly considered to use only DEF for this certain performance. Prior to equipping the pump ensure to regenerate it by using the provided syringe that designates to the factory directions.
6. Exhaust System - The maximal wrongdoing for exhaust damage or corrosion is rust that can result in a slew of issues. It all depends on the extremity that it can result in an absolute exhaust failure or systematic damage. In more uncommon cases, a new rusty exhaust pipe in contrast to older makes can get worn or damaged by erosion, where they can loosen and start to drag on the road. If this occurs, you have to take your vehicle to the closest exhaust mechanic or specialist. If driving the vehicle is unsafe, then you must call for roadside assistance and make sure to not breathe in the harmful emissions. If you can hear rattling sounds emitting from beneath the vehicle it could signal that a component has loosened, for example a bracket, heat shield or a fragment of exhaust pipe.
   It is essential to have your exhaust system checked out if this case keeps on returning. Loose exhaust parts or absent brackets can place more systematic pressure on the exhaust system and damage other costly parts. We store a vast range of exhaust mounting kits to repair all of this damage. 
7. Reductant Injector Air Pump - A clogged or obstructed pump impeller can result in a reduced pump operation. Before taking out the pump, clean out any matter that could place an affect on the impeller performance by using air pressure and a mild substance. A non-metallic and stiff-bristle brush can help remove stubborn accumulation. If having diagnosed any issue in other components of the secondary air injection system, repair or replace the parts that are affected, and retest the air injection pump for a correct performance before detecting a fault in the pump.
8. Exhaust Gas Temperature Sensor - A poor or failing EGR temperature sensor could be dealing with a vital symptom such as an engine ping or knock. If the EGR temperature sensor does not succeed in its performance, this will result in a flow of the EGR system. This can result in raising cylinder temperatures, which leads to an engine ping or knock. Engine ping or knock will produce sounds such as metallic rattles that are coming out of the engine bay, and are signaling a problem with the combustion process. Any problem that causes an engine ping or knock needs keen attention by a professional mechanic, as engine knock can result in critical engine damage if left unchecked.

Are you eager to learn a few recurrent symptoms of OBD Code P2064? We are here to help out. Take a glance at our list below:

Common Symptoms

Symptoms of a P2064 error code might include:

• Decrease in fuel efficiency
• Too much black smoke coming out of vehicle exhaust
• Declined engine performance
• All other SCR associated codes
• Too much exhaust leak
• Delay in acceleration
• Illuminated Malfunction Indicator Lamp (MIL)
• Exhaust is rich or lean

Our team has written down a few steps that can help you to correct the incident of OBD Code P2064. They are described below as follows:

• If the control solenoid performs correctly and all circuits occur all the same in accordance to the vehicle producer’s directions, surmise a failed high-pressure pump, torque converter, or PCM.
• This is going to assist in finding out whether the function crash is irregular or not. Once all the codes have been cleared, have vehicle test-driven to affirm if the code is coming back.
• A lot of vehicle programs use an electronically managed valve within the automatic transmission cooler lines to control the flow of fluid into the cooler on its own.
• Must all system circuitry and sensors be inspected and the transmission is performing in really good condition, surmise a defective PCM, but is mindful that a PCM fault is uncommon and replacing the PCM will need to be reprogrammed.

Do not feel stressed if your OBD Code is still flashing on, as we are available to help you fix it. Take a glance at our high quality rang of ECM, PCM, Diesel Exhaust Fluid, Diesel Particulate Filter, Reductant Pump, Exhaust System, Reductant Injector, Exhaust Gas Temperature Sensor and so much more. This way all your problems will be solved in a flash.

These are a few steps that you should read through to easily diagnose this error code:

Utilize the scanner that is attached to the vehicle diagnostic connector to receive all codes being stored and relevant freeze frame data. It is beneficial to record this data prior to clearing out the codes, and test-drive the vehicle to an extent the PCM either has access to readiness mode or the code is being reset. If the PCM has access to readiness mode at this moment, then the code is irregular and might be a lot more complicated to diagnose. In such a case, the settings, which provide to the code being stored, might need to get worse before making a consistent diagnosis.
If the code is being instantly reset, proceed to the next step of your diagnosis, in which you will need to search for your vehicle data reference for diagnostic flow-charts, connector pin-out charts, connector face views, and component testing methods/identifications.

• Step 1: Utilize the DVOM to exam the reductant tank supply pump referring to vehicle producer’s identifications. Certain parts that do not examine within utmost acceptable parameters should be regarded as faulty.
• Step 2: Utilize your reference of vehicle diagnostic data and the DVOM to examine reductant supply pump voltage, normally battery voltage, with the pump triggered. If present settings will not allow automatic triggers, utilize the scanner to trigger the pump with your hands.
• Step 3: If the reluctant supply pump functions just right, utilize the DVOM to examine input and output signal circuits coming out of the fuse panel, PCM, and ignition switch. Disengage all controllers before using the DVOM for inspection.

Common Mistakes When Diagnosing the P2064 Code

A vital sign of smoke or vapor being released from beneath the hood. The ignition timing might be set improperly and will need to be repaired. When taking a look under the hood, you will see that the drive belts appear as if loose, so they may have to be tightened or replaced altogether. If you can see a visible body of fluid from beneath the car, this signals a failure in the cylinder head gasket. This will be affirmed in the state of whirling smoke that is blowing out of the exhaust system. The code P2064 alerts you to detect for accuracy in performance of the VCT solenoid. You are viewing for a protruding or jammed VCT solenoid valve that happens due to pollution. Take reference to a vehicle specified repair manual to conduct element test for the VCT unit.

• DEF injector defect
• Wiring problem