What to Do If Your P20E8 Reductant Pressure is Too Low

The reductant pressure is too low.

P20E8 Reductant Pressure Too Low

P20E8 Reductant Pressure Too Low is an indication that the pressure of the reductant is lower than it should be, and is usually caused by a faulty reductant injector, defective sensor or loose connection. When this happens, the cost of fuel and maintenance can go up due to the engine’s inability to achieve optimal performance. This can also lead to a decrease in power and even damage related to detonation. Fortunately, corrective measures can be taken including replacing reductant injectors, sensors, checking connections and repairing any involved systems. With proper diagnosis and repair techniques, this issue can be successfully addressed to again have your vehicle performing efficiently without waste or damage.

Cause of P20E8 Reductant Pressure Too Low

The cause of P20E8 Reductant Pressure Too Low can be attributed to inadequate supply of reductant or low pump output pressure. This can be caused by poor fuel line plumbing or a drop in the pressure of the reductant pump output.

Troubleshooting P20E8 Reductant Pressure Too Low

The first step in troubleshooting P20E8 Reductant Pressure Too Low is to check the fuel line plumbing for any leaks or blockages. Additionally, it is important to measure the output pressure from the reductant pump to ensure it is in an acceptable range.

Consequences of P20E8 Reductant Pressure Too Low

If left unresolved, the consequences of P20E8 Reductant Pressure Too Low can be severe. Inadequate emission reduction will occur, leading to a drop in fuel efficiency and overall vehicle performance.

Solutions for P20E8 Reductant Pressure Too Low

Fortunately, there are several solutions available for resolving this issue. Replacing the pump or modifying the plumbing to enhance supply pressure can help address low reductant pressure. Additionally, replacing the reductant filter and/or lines if they are clogged can help improve performance as well.

Tools and Equipment Required to Fix P20E8 Reductant Pressure Too Low

In order to correctly diagnose and repair this issue, certain tools and equipment will be necessary. A scanner toolkit is needed in order to retrieve error codes and access data points within system networks. Additionally, a set of socket wrenches, screwdrivers, pliers and sealed ratchet sets are essential for plumbing adjustment/replacement as needed. Any other tools specific to the vehicle being serviced should also be prepared prior to repairs being attempted.

Engage ignition switch and read IPC for DTC description (Data Trouble Codes)

When troubleshooting a P20E8 Reductant Pressure Too Low issue, the first step is to engage the ignition switch and read the IPC (Instrument Panel Cluster) for any relevant Data Trouble Codes (DTCs). This will allow the technician to identify any codes related to the reductant pressure issue and help diagnose the issue further. It is important to ensure that all previously stored codes have been addressed and properly cleared from IPC before proceeding with further diagnosis.

Confirm reductant filter is clean/not contaminated or blockage present

The next step when troubleshooting a P20E8 Reductant Pressure Too Low issue is to confirm that the reductant filter is clean and not contaminated or blocked. This can be done by inspecting the filter visually or using other diagnostic equipment specific to the vehicle being serviced. If there is a blockage present, it must be cleared before continuing with diagnosis. If there are no visible issues, it may be necessary to remove and replace the filter as part of the repair process.

Diagnosis Procedure Checklist

The final step when troubleshooting a P20E8 Reductant Pressure Too Low issue is to consult a Diagnosis Procedure Checklist based on computer code(s) retrieved from the vehicle’s system network diagnostics scan tests. This checklist will provide a detailed list of steps that must be taken in order to properly diagnose and repair this issue, including any relevant component testing, inspection, replacement, or adjustment procedures that may be required.

FAQ & Answers

Q: What is the cause of P20E8 Reductant Pressure Too Low?
A: The cause of P20E8 Reductant Pressure Too Low is an inadequate supply of reductant or low pump output pressure.

Q: What are the consequences of P20E8 Reductant Pressure Too Low?
A: The consequences of P20E8 Reductant Pressure Too Low are inadequate emission reduction and a drop in fuel efficiency.

Q: What are the solutions for P20E8 Reductant Pressure Too Low?
A: The solutions for P20E8 Reductant Pressure Too Low are replacing the pump or modifying plumbing to enhance supply pressure, and replacing the reductant filter and/or lines if clogged.

Q: What tools and equipment are required to fix P20E8 Reductant Pressure Too Low?
A: Tools and equipment required to fix P20E8 Reductant Pressure Too Low include a scanner toolkit to retrieve error codes and access data points in system network, a set of socket wrenches, screwdriver, pliers, sealed ratchet set for plumbing adjustment/replacement, and other diagnostic equipment specific to the vehicle being serviced.

Q: What is the diagnosis procedure checklist when troubleshooting a P20E8 Reductant Pressure Too Low issue?
A: The diagnosis procedure checklist when troubleshooting a P20E8 Reductant Pressure Too Low issue includes engaging the ignition switch and reading IPC for DTC description (Data Trouble Codes), ensuring that all previously stored codes have been addressed and properly cleared from IPC, confirming that the reductant filter is clean/not contaminated or blockage present.

The P20E8 Reductant Pressure Too Low code indicates a problem with the reductant system. This could be due to a fault in the pump, system pressure sensors, or any of the related components. In order to fix this issue, a thorough inspection of all components must be done to identify the exact source of the problem and repair it accordingly.