P1233 – Airflow/Torque Correlation Fault (BMW)

Description

P1233 BMW indicates the airflow and torque signals do not correlate.

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Symptoms

  • Poor acceleration
  • Hesitation
  • Rough idle

Causes

  • Air leak
  • MAF failure
  • Throttle issue

Diagnosis

  • Compare MAF values
  • Inspect intake
  • Scan DME

Repair

  • Fix intake leaks
  • Replace MAF
  • Repair throttle body

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