P2122Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle control motor failure, Wiring issue
⚙️ Powertrain (Motor y Transmisión)🏭 Specific to Audi
Sensor "D" of the redundant accelerator-pedal pair reports a voltage below the valid window. The ECU rejects the signal and falls back on the second sensor or limp-home.
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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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Symptoms You Will Notice
What you may observe when this code appears
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Possible Causes
The components or conditions that trigger this code
- 1Pedal sensor track worn
- 2Signal wire shorted to ground
- 3Connector pins corroded - high contact resistance
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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
CodeP2122
CategoryMotor (P)
ManufacturerAudi
SeverityModerada
Symptoms4
Causes3
Solution steps0
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