VW 2.5L Secondary Air Injection Sensor Codes

VW 2.5L Secondary Air Injection Sensor Codes

Air injection systems can be contaminated by foreign particles.

Models 

2005-2012 Jetta, Golf, Beetle, Passat and Rabbit models with the 2.5L CBTA-CBUA engine.

On models with the 2.5 CBTA-CBUA engine, the hose for the secondary air injection system can be contaminated by foreign particles. The contamination can cause the following codes:

  • P2431: Secondary Air Injection Airflow/Pressure Bank 1 Sensor Circuit Range/Performance
  • P2432: Secondary Air Injection System Air Flow/Pressure Bank 1 Sensor Circuit Low
  • P2433: Secondary Air Injection System Air Flow/Pressure Bank 1 Sensor Circuit High

VW has released an updated sensor kit and secondary air injection pressure hose (p/n 07K 198 125) that is less prone to contamination. On 2005-2008 vehicles, the sensor can be serviced separately using p/n 07K 906 051. The kit includes an adapter harness for the new sensor. 

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