P1234 – Throttle/Torque Correlation Fault (BMW)

Description

P1234 BMW indicates the throttle position does not match expected torque.

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Symptoms

  • Hesitation
  • Reduced power
  • Rough idle

Causes

  • Throttle body wear
  • Sensor mismatch
  • Wiring issue

Diagnosis

  • Check throttle signals
  • Inspect wiring
  • Scan DME

Repair

  • Replace throttle body
  • Repair wiring
  • Replace sensor