P2430 Secondary Air Injection System Air Flow Pressure Sensor Circuit Bank 1

• OBD2 Code: P2430
• Description: Secondary Air Injection System Air Flow/Pressure Sensor Circuit Bank 1
• Definition: This code indicates that the Powertrain Control Module (PCM) has detected a malfunction in the air flow/pressure sensor circuit of the secondary air injection system for bank 1. The secondary air injection system is responsible for reducing emissions by injecting fresh air into the exhaust stream to help burn off excess hydrocarbons.

p2430 – Secondary Air Injection System Air Flow Pressure Sensor Circuit Bank 1

Typical Severity: Moderate

Common Causes

p2430 – Secondary Air Injection System Air Flow Pressure Sensor Circuit Bank 1

Common causes of this OBD2 code include:

• Faulty air flow pressure sensor
• Wiring issues in the air flow pressure sensor circuit
• Vacuum leaks in the secondary air injection system
• Excessive carbon buildup in the secondary air injection system components

 

Common Misdiagnosis

OBD2 Code: P2430

Description: Secondary Air Injection System Air Flow/Pressure Sensor Circuit Bank 1

Common Misdiagnosis: Replacing the air flow/pressure sensor without checking for issues in the wiring or connectors, or failing to inspect the secondary air injection pump and related hoses for leaks or blockages.

 

Common Diagnostic Steps

OBD2 Code: P2430

Description: Secondary Air Injection System Air Flow/Pressure Sensor Circuit Bank 1

• Check for any stored codes and freeze frame data to understand the conditions when the code was set.
• Inspect the air injection system components, including hoses, valves, and sensors for damage or disconnections.
• Test the air flow/pressure sensor circuit for proper voltage and ground. Repair any wiring issues as needed.
• Verify that the secondary air pump is functioning correctly by listening for its operation during a cold start.
• Use a scan tool to monitor live data from the air flow/pressure sensor to ensure it is within manufacturer specifications.
• If necessary, replace the faulty air flow/pressure sensor after confirming it is defective through testing.
• Clear the code and perform a test drive under similar conditions to confirm that the issue has been resolved.