Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the car's system that helps reduce pollution. It's like a valve that isn't opening or closing properly to let clean air in.
The P1420 code indicates a problem with the electrical circuit controlling the secondary air injection valve, which helps reduce emissions.
The secondary air injection system pumps fresh air into the exhaust system to help burn off excess hydrocarbons. The control circuit for the secondary air injection valve is responsible for opening and closing the valve to allow air to enter. When the control circuit has an electrical issue, it can trigger the P1420 code.
• Check Engine Light is on
• Failed emissions test
• Poor engine performance
• Faulty secondary air injection valve
• Damaged wiring or connectors
• Failed air pump relay
Secondary Air Injection: A system that injects fresh air into the exhaust stream to help reduce emissions.
Valve: A device that controls the flow of air or fluid.
• Scan the vehicle for codes and freeze frame data.
• Inspect the secondary air injection valve and wiring.
• Test the air pump relay and circuit.
• Replace the faulty secondary air injection valve.
• Repair or replace damaged wiring or connectors.
• Replace the air pump relay if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect the air injection system.
• Ensure electrical connections are secure.
• Perform scheduled maintenance.
Emission Control Issue
• Address the issue promptly to avoid emissions problems.
• Consult a professional mechanic if unsure about repairs.
Check with the vehicle manufacturer for emissions-related warranty coverage.
The P1420 code has been associated with emissions control systems in vehicles since the introduction of OBD-II standards.
Moderate – Addressing this issue is important to maintain emissions compliance and vehicle performance.
Driving with an emissions-related fault may result in failing emissions tests and potential fines.
• Engine at operating temperature
• Vehicle in open-loop mode
The secondary air injection valve is typically located near the exhaust manifold.
Q: Can I drive my car with a P1420 code?
A: While it's possible to drive, it's not recommended as it may affect emissions and engine performance.
Q: Will a P1420 code cause my car to fail an emissions test?
A: Yes, a P1420 code can cause your vehicle to fail an emissions test.
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