P2435 Fault Code

Secondary Air Injection System Air Flow/Pressure Sensor Circuit Bank 2

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2435 fault code indicates an issue with the secondary air injection system, specifically related to the air flow or pressure sensor circuit on bank 2. This system is designed to help reduce emissions by injecting air into the exhaust system during cold starts, improving combustion efficiency and helping to burn off excess hydrocarbons. A malfunctioning sensor can cause the engine control module (ECM) to detect incorrect air flow or pressure readings, triggering the fault code.

What are the symptoms of the P2435 code?

Symptoms associated with the P2435 code may include:

• Illuminated check engine light
• Poor engine performance or reduced power
• Increased emissions during vehicle inspection
• Possible rough idling or stalling in cold conditions
• Strange noises from the secondary air injection system

What causes the P2435 code?

Possible causes of the P2435 code include:

• A faulty secondary air injection pump
• Damaged or corroded wiring or connectors in the air flow/pressure sensor circuit
• A malfunctioning air flow/pressure sensor on bank 2
• Blockages in the secondary air injection system, such as carbon buildup
• Issues with the engine control module (ECM) or its programming

How to fix P2435?

To resolve the P2435 fault code, consider the following steps:

1. Inspect the secondary air injection pump and ensure it is functioning correctly.
2. Check for any damaged or loose wiring and connectors in the air flow/pressure sensor circuit.
3. Test or replace the air flow/pressure sensor on bank 2 if it is faulty.
4. Clean or replace any blocked components in the secondary air injection system.
5. Clear the error codes and perform a test drive to verify that the issue is resolved.