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P2667 OBD2: Fuel Shutoff Valve "B" Control Circuit High

P2667 OBD2: Fuel Shutoff Valve “B” Control Circuit High

The P2667 code is a diagnostic trouble code (DTC) that indicates a problem with the fuel shutoff valve “B” control circuit. This code is typically triggered when the engine control module (PCM) detects an abnormal signal from the fuel shutoff valve.

What Does the P2667 Code Mean?

The P2667 code signifies that the PCM has identified a high voltage condition in the fuel shutoff valve “B” control circuit. The fuel shutoff valve is designed to manage fuel pressure within the system, and any irregularities can lead to significant engine performance issues.

What Causes the P2667 Code?

Several factors can trigger the P2667 code, including:

  • Fuel shut-off valve failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues in the fuel shutoff valve circuit

What Are the Symptoms of the P2667 Code?

Drivers experiencing the P2667 code may notice the following symptoms:

  • Decreased engine performance
  • Engine may stall unexpectedly
  • Increased fuel consumption

How Serious Is the P2667 Code?

The P2667 code is considered urgent. Ignoring this code can lead to severe engine damage or unsafe driving conditions. Immediate attention is necessary to avoid further complications.

How to Diagnose the P2667 Code

To diagnose the P2667 code, a mechanic will typically follow these steps:

  1. Use an OBD-II scanner to confirm the presence of the P2667 code.
  2. Inspect the wiring and connectors associated with the fuel shutoff valve for any visible damage or corrosion.
  3. Check the functionality of the fuel shut-off valve using a multimeter.
  4. Test the PCM for faults or failures.

Common Repairs for the P2667 Code

Common repairs for the P2667 code may include:

  • Replacing the faulty fuel shut-off valve
  • Repairing or replacing damaged wiring or connectors
  • Replacing the Powertrain Control Module (PCM) if found defective

How Much Does It Cost to Fix the P2667 Code?

The cost of repairing the P2667 code can vary widely based on the underlying issue. On average, repairs can range from $100 to $600, depending on whether parts need to be replaced or if extensive labor is required.

Can I Fix the P2667 Code Myself?

While some DIY enthusiasts may attempt to fix the P2667 code themselves, it is essential to have a good understanding of automotive systems and diagnostic procedures. If you are not experienced, it is advisable to seek professional help to avoid further damage or complications.

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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