P2431Air control solenoid failure, Powertrain Control Module (PCM) failure, Secondary Air System pressure sensor failure, Wiring issue
⚙️ Powertrain (Motor y Transmisión)🏭 Specific to Audi
The ECU detects a general fault in the secondary air injection system air flow or pressure sensor circuit. The diagnostic cannot verify proper SAI operation.
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Can I keep driving? With caution
You can drive to the shop, but do not postpone the repair. The problem may worsen and damage other components.
Sistema Afectado
Motor · Powertrain
La falla pertenece al grupo motopropulsor (motor y gestión electrónica).
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Possible Causes
The components or conditions that trigger this code
- 1Defective SAI sensor
- 2SAI sensor wiring fault
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Estimated Cost
Approximate range in USD (varies by region and shop)
$100—$800
Varies by diagnosis
* Diagnosis only: $50–$150
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Quick Info
CodeP2431
CategoryMotor (P)
ManufacturerAudi
SeverityModerada
Symptoms0
Causes2
Solution steps0
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