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P023F OBD2: Fuel Pump Secondary Circuit/Open

P023F OBD2: Fuel Pump Secondary Circuit/Open

What Does the P023F Code Mean?

The P023F code indicates a problem with the secondary fuel pump circuit. This typically means that the engine control module (ECM) has detected an open or malfunctioning circuit for the fuel pump, which can lead to decreased engine performance.

What Causes the P023F Code?

The P023F code can be triggered by several issues, including:

  • Fuel pump failure
  • Fuel pump relay failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues related to the fuel pump

What Are the Symptoms of the P023F Code?

Drivers may experience the following symptoms when the P023F code is present:

  • Decreased engine performance
  • Engine may not start

How Serious Is the P023F Code?

The P023F code is considered urgent. It indicates that immediate action is necessary to prevent severe damage to the vehicle or potential harm to the driver and passengers. Ignoring this code can lead to further complications, such as total engine failure.

How to Diagnose the P023F Code

To properly diagnose the P023F code, a mechanic will typically follow these steps:

  1. Use an OBD-II scanner to confirm the presence of the P023F code.
  2. Inspect the fuel pump and its wiring for any visible damage or signs of wear.
  3. Test the fuel pump relay for proper function.
  4. Check the Powertrain Control Module (PCM) for any faults.

Common Repairs for the P023F Code

Common repairs needed to fix the P023F code include:

  • Replacing the fuel pump
  • Replacing the fuel pump relay
  • Repairing wiring issues related to the fuel pump circuit
  • Replacing the Powertrain Control Module (PCM) if necessary

How Much Does It Cost to Fix the P023F Code?

The cost to fix the P023F code can vary significantly depending on the specific issue. On average, repairs can range from $150 to $1,000, depending on whether the fuel pump, relay, or PCM needs to be replaced.

Can I Fix the P023F Code Myself?

While some experienced DIYers may be able to diagnose and replace a faulty fuel pump or relay, it is important to understand the risks. Proper diagnosis is key, as simply replacing parts without full understanding may not solve the underlying issue. If you are not confident in your skills, it is advisable to seek professional help.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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