Engine-Codes - Generic - P2443

P2443 Code - Secondary Air Injection System Switching Valve Stuck Closed Bank 2

- Code Popularity: 19,958 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P2443?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Vacuum Switching Valve (VSV)
  • Vacuum Switching Valve (VSV) harness is open or shorted
  • Vacuum Switching Valve (VSV) circuit poor electrical connection
  • Faulty Pressure Sensor
  • Faulty Air Switching Valve
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P2443?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P2443 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P2443 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P2443 Code Mean?

To accelerate the activation of catalyst when warming up the engine, the air injection system pumps the secondary air to the exhaust manifold by pressure. The secondary air is supplied by the air pump and it is pumped to the exhaust manifold through the air switching valve. Open and close movement of the air switching valve is regulated by the Vacuum Switching Valve (VSV).The air pump and the air switching valve are observed by the Engine Control Module (ECM) and are used to detect malfunction in this system. The ECM monitors the secondary air injection system and detects malfunction using a pressure sensor located on the air switching valve.
The ECM observes the pressure in the secondary air passage using the pressure sensor located on the air switching valve in the secondary air injection system. The sensor detects an exhaust pressure in the secondary air passage.

P2443 Code - Secondary Air Injection System Switching Valve Stuck Closed Bank 2

Need more Information on the Code?

Need more information on how to fix the P2443 code? Get Access to Factory Service Manuals

Code P2443 Information for Specific Makes

  • P2443 Dodge Secondary Air Injection System Switching Valve Stuck Closed Bank 2
  • P2443 Lexus Secondary Air Injection System Switching Valve Stuck Closed Bank 2
  • P2443 Toyota Secondary Air Injection System Switching Valve Stuck Closed Bank 2  

Need Help with the Code?

Get the P2443 code diagnosed by a professional: Find a repair shop in your area