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P2435 OBD2: Secondary Air Injection System Air Flow/Pressure Sensor Circuit

P2435 OBD2: Secondary Air Injection System Air Flow/Pressure Sensor Circuit

What Does the P2435 Code Mean?

The P2435 OBD-II code indicates an issue with the Secondary Air Injection System, specifically relating to the Air Flow/Pressure Sensor Circuit. This system is designed to reduce emissions by injecting fresh air into the exhaust system during cold starts, helping to burn off excess fuel and lower harmful emissions.

What Causes the P2435 Code?

Several factors can trigger the P2435 code, including:

  • Air control solenoid failure
  • Powertrain Control Module (PCM) failure
  • Secondary Air System pressure sensor failure
  • Wiring issues within the AIR system

What Are the Symptoms of the P2435 Code?

The symptoms of the P2435 code may include:

  • Check Engine Light illuminated
  • Reduced engine performance
  • Increased emissions
  • Possible rough idling during cold starts

How Serious Is the P2435 Code?

While the P2435 code is classified as moderate severity, it is crucial to address it promptly. Ignoring this code may lead to more significant engine problems over time, affecting both performance and emissions compliance.

How to Diagnose the P2435 Code

To diagnose the P2435 code, a mechanic will typically:

  1. Use an OBD-II scanner to confirm the presence of the code.
  2. Inspect the AIR system components and wiring for damage or corrosion.
  3. Test the AIR Pressure Sensor for proper function.
  4. Check the operation of the air control solenoid.

Common Repairs for the P2435 Code

Common repairs that may be necessary to resolve the P2435 code include:

  • Replacing the air pump
  • Repairing or replacing faulty wiring
  • Replacing the AIR Pressure Sensor
  • Repairing or replacing the air control solenoid

How Much Does It Cost to Fix the P2435 Code?

The cost to fix the P2435 code can vary widely depending on the specific issue and your location. Generally, repairs can range from $100 to $600, with parts and labor influencing the final bill.

Can I Fix the P2435 Code Myself?

While some DIY enthusiasts may be able to address simple wiring issues or replace components like the air pump, diagnosing and fixing the P2435 code often requires specialized tools and knowledge. It is recommended to consult with a professional mechanic for a thorough diagnosis and repair.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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