Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the air injection system. It's like when a fan in your room isn't working well because it's not getting enough power.
The P2259 code indicates that the secondary air injection system's control circuit 'B' is experiencing low voltage or is not functioning properly.
The secondary air injection system helps reduce emissions by injecting air into the exhaust stream to help burn off excess fuel. The control circuit 'B' is responsible for managing part of this system. When the voltage in this circuit is lower than expected, the P2259 code is triggered.
• Check Engine Light is on
• Poor engine performance
• Increased emissions
• Faulty air pump relay
• Damaged wiring or connectors
• Failed air pump
Secondary Air Injection System: A system that helps reduce emissions by injecting air into the exhaust stream.
Relay: An electrical component that opens or closes circuits electronically or electromechanically.
• Use an OBD-II scanner to confirm the code.
• Inspect the air pump relay and wiring for damage.
• Test the air pump for proper operation.
• Replace the air pump relay if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the air pump if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Camry
• Chevrolet Silverado
• Ford F-150
• Regularly inspect and maintain the air injection system.
• Ensure all electrical connections are secure.
• Replace air filters as needed.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent this issue.
Check with your vehicle manufacturer as emissions-related components may have an extended warranty.
The P2259 code has been associated with secondary air injection system issues, particularly in vehicles with aging components.
Moderate – While the vehicle may still operate, it's important to address this issue to prevent increased emissions and potential engine performance problems.
Driving with increased emissions may not comply with local environmental regulations and can lead to fines.
• Engine at operating temperature
• Vehicle in a safe location for testing
The secondary air injection pump is usually located near the front of the engine bay, close to the exhaust manifold.
Q: Can I drive my car with a P2259 code?
A: While you can drive with this code, it's best to fix it soon to avoid increased emissions and potential engine issues.
Q: What happens if I ignore the P2259 code?
A: Ignoring this code can lead to higher emissions, poor engine performance, and potential damage to the air injection system.
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