P1134 – O2 Sensor Slow Response (BMW)

Description

P1134 BMW indicates slow response from the oxygen sensor.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor fuel economy

Causes

  • Sensor contamination
  • Exhaust leak
  • Aging sensor

Diagnosis

  • Check O2 readings
  • Inspect exhaust
  • Scan DME

Repair

  • Replace O2 sensor
  • Fix exhaust leak
  • Clean connectors