What is an OBD2 code?

An OBD2 (On-Board Diagnostics) code is a diagnostic trouble code (DTC) generated by your vehicle's computer system when it detects a problem. These codes help identify specific issues with your vehicle's engine, transmission, emissions, or other systems.

How do I read OBD2 codes?

To read OBD2 codes, you'll need an OBD2 scanner. Plug it into your vehicle's OBD2 port (usually located under the dashboard), turn your key to the 'ON' position, and follow your scanner's instructions to retrieve the codes. Each code starts with a letter (P, B, C, or U) followed by four numbers.

What do the different types of OBD2 codes mean?

OBD2 codes are categorized by their first letter: P (Powertrain) for engine and transmission issues, B (Body) for interior systems like airbags, C (Chassis) for mechanical systems like brakes, and U (Network) for computer and module communication problems.

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Home » OBD2 Codes » P2667

Code P2667

Symptoms

• Check Engine Light is on

• Engine may not start

• Poor fuel efficiency

Common Causes

• Faulty fuel shutoff valve B

• Wiring issues such as shorts or open circuits

• Faulty PCM

Glossary

PCM: Powertrain Control Module, the computer that controls engine and transmission functions

OBD-II: On-Board Diagnostics, a standardized system for self-diagnostics and reporting

Related Codes

• P2666

• P2668

Official description

Fuel Shutoff Valve B Control Circuit High

Laymans terms

This code means that there's a problem with the fuel shutoff valve in your car. It's like a switch that controls the flow of fuel, and it's not working right.

Explanation

The P2667 code is triggered when the Powertrain Control Module (PCM) detects a high voltage condition in the fuel shutoff valve B control circuit.

Technical description

The fuel shutoff valve B is responsible for controlling the flow of fuel to the engine. A high voltage condition in its control circuit indicates that the PCM is receiving a voltage signal that is outside of the normal operating range, suggesting a potential wiring issue, a faulty valve, or a problem with the PCM itself.

Diagnosis steps

• Use an OBD-II scanner to confirm the code

• Inspect the wiring and connectors for damage

• Test the fuel shutoff valve B for proper operation

Repair procedures

• Repair or replace damaged wiring/connectors

• Replace the faulty fuel shutoff valve B

• Reprogram or replace the PCM if necessary

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford F-150

Preventive measures

• Regular maintenance checks

• Ensure clean and secure connections

• Use quality fuel

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light

• Have your vehicle inspected by a professional

• Avoid driving with this issue to prevent further damage

Warranty information

Check with your vehicle manufacturer; emissions-related components may have extended warranties.

Historical data

This code has been associated with fuel delivery issues and is more common in vehicles with higher mileage.

Urgency level

Moderate – It's important to address this issue to avoid potential engine performance problems.

Legal and safety notice

Driving with a malfunctioning fuel system can lead to safety risks and may not comply with emissions regulations.

Testing conditions

• Engine running

• Electrical system operational

Component location

The fuel shutoff valve is typically located near the fuel tank or along the fuel line.

FAQs

Q: Can I drive my car with a P2667 code?
A: It's not recommended to drive with this code as it can lead to engine performance issues.

Q: How do I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.

Last updated: Mar 2, 2026 • Source: internal database

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