P1042 – Throttle Adaptation Fault (BMW)

Description

P1042 BMW indicates the throttle body cannot complete adaptation.

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Symptoms

  • Hesitation
  • Poor acceleration
  • Rough idle

Causes

  • Low voltage
  • Throttle wear
  • Sensor error

Diagnosis

  • Check battery voltage
  • Run adaptation
  • Inspect throttle body

Repair

  • Charge battery
  • Replace throttle body
  • Replace sensor