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P2293

Fuel Pressure Regulator B Performance

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By
KBB Service Advisor
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Reviewed by
Gary Hardesty

What Is the P2293 Code?

Symptoms
Causes
Seriousness
Can I Still Drive?
Diagnose
Difficulty of Inspecting
Get Additional Help

The P2293 code definition is “Fuel Pressure Regulator B Performance.” This code indicates that the engine control module (ECM) or powertrain control module (PCM) has detected a problem with the injector fuel pressure regulator that has the designation “B” in your engine management system. As long as your vehicle has a fuel pressure regulator and is an OBD-II vehicle, you may see the P2293 code pop up at some point.

More About Error Code P2293

The fuel system is an important part of all engines that use fuel to move the vehicle forward. When it comes to this code, you’ll find that it’s a very generic error code. It indicates that the fuel pressure regulator, in this case, the B regulator, has some kind of performance fault related to fuel readings and supply. Most of the time, this has to do with “saddle tanks,” which allows for two gas tanks, usually one on each side of the transmission tunnel. These tanks are usually treated as a single tank with one fuel gauge on the dash for the driver, but if there’s a problem, the vehicle needs to know if an issue is occurring in tank “A” or tank “B.” The problem is a difference between the intended fuel pressure and the pressure the regulator is sensing in tank B.

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What Are the Symptoms of a P2293 Code?

Depending on the actual level of the fuel pressure and the reason for the code, you may experience a variety of different symptoms of code P2293. In general, you should expect to experience physical symptoms of poor engine performance, the most common symptom. This can include excessive fuel consumption, poor acceleration, and hesitation. The engine might stall or fail to start entirely if the problem is bad enough. In some vehicles, you may experience Limp Mode, also called Limp Home Mode, which is a failsafe mode that limits the features of your vehicle. Even if the vehicle runs all right, it might fall behind at top speeds, and the original symptoms worsen over time. The check engine light will also usually turn on.

What Are Some Causes of a P2293 Code?

Several possible causes are associated with code P2293, mostly concerning the actual fuel system. Here are a few of the most common causes people see with this code:

  • Fuel pressure regulator failure
  • Fuel pump failure
  • Fuel pump supply issues
  • Fuel injector failure or leak of fuel
  • Electrical fault with loose wires
  • Problems with the electrical connector pins
  • Clogged fuel filter
  • Defective fuel pressure sensor
  • General wiring, wiring harness, and electrical connection issue
  • PCM failure

These causes are not equally likely. For example, PCM failure is exceptionally uncommon. But you must be ready to look at any of them during your diagnostic process. Whether you’re experiencing a mechanical fault or an electrical fault, being able to check dirty connections, determine whether you’re experiencing a false reading, look at the signal wire, and use your scan tool to see if there are any other codes will help you fix the problem.

How Serious Is the P2293 Code?

The P2293 diagnostic trouble code is very serious. This code can result in a complete no-start condition, especially if the fuel pressure is very low. Running your vehicle without enough fuel can also cause engine damage over time, as it may result in engine misfiring and an engine that generally strains itself to find sufficient power. Getting an expert to help you with the P2293 code as soon as possible is best. Replacement costs for more advanced fault conditions that this code can lead to are much higher than the cost of fixing this core problem.

Can I Still Drive with a P2293 Code?

It depends on how severe your memory code symptoms are. Sometimes, you cannot drive because your vehicle enters a no-start condition. However, you might still be able to drive in other cases, but you should avoid doing so. The more you drive with an error code that has to do with fuel issues, the more likely you will experience severe problems. Poor fuel economy means that fixing your fuel pressure regulator circuit might save you money. Your best choice to avoid severe engine damage is to stop driving and fix your fuel situation.

How Easy Is It to Diagnose a P2293 Code?

There are many possible diagnoses for a P2293 code throughout the fuel system. There may be problems with the fuel pressure sensor, fuel pressure regulator, fuel filter, fuel injector, fuel pump, and many other components within your vehicle. If you’re not fully confident that you can examine all of these vehicle components and find the solution, you should take your vehicle to a certified mechanic for complete repair steps so you can avoid the need for a follow-up repair at a later date.

How Difficult Is It to Inspect a P2293 Code?

Inspecting the P2293 code is difficult because it is part of the fuel system, and if you don’t know how to inspect the fuel system, it can be more dangerous than some other parts of your vehicle. You may need to know how to take out a gas tank while it still has fuel inside, which is often daunting, or to deal with an internal leak safely. Plus, you need advanced tools like a diagnostic scanner and access to vehicle information like repair guides, safety recalls, factory wiring diagrams, and technical service bulletins. All of these are easier for an experienced mechanic than they might be for you as a DIYer.

Need Additional Help with Your P2293 Code?

Most people will need extra help with the P2293 fault code, so many experts can help you with whatever problems you’re experiencing.

The first step should be to find an auto repair shop in your area. A local automotive repair shop will make it easier to fix the problem without going very far, which can be especially difficult if you’re experiencing a no-start condition.

If you see additional codes when you run your code scanner, you might also benefit from the OBD-II database at KBB.com. This will help you understand these other codes, including their meaning and how to fix them.

P2293 Q&A

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