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P1126

P1126 - Accelerator sensor 3 error (foot pedal in open position)

Bosch · ECU Troubleshooting

What does P1126 mean?

Accelerator sensor 3 reports an issue when the foot pedal is in the fully open position. This points to a problem with the sensor or its reading at full throttle.

Common Causes

  • Accelerator sensor 3 failure
  • Accelerator pedal linkage issue
  • Wiring fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check accelerator sensor 3 and its wiring.

  2. 2

    Ensure the accelerator pedal linkage is not binding.

  3. 3

    Verify sensor reading at the open position.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

ECU internal faultECU internal fault - Electronic Control Unit internal errorP0008P0008 - No signal on both crankshaft and camshaft speed sensorP0122P0122 - Accelerator sensor 1 error (voltage low)
Source: Bosch ECU Troubleshooting
Open Manual (Page 3)Search more codes in this manual