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2009 AUDI A3
2.0L TDI•FWD•AUTOMATIC•diesel•CBEA•turbo
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor505Torque3210Fluid7DTC1705Battery1Maintenance0Recalls5
P0526moderate severityPowertrain

Cooling Fan Speed Sensor Circuit

on 2009 Audi A3 2.0L TDI · FWD

What this code means

The PCM detects a problem with the cooling fan speed sensor signal. This sensor tells the module how fast the cooling fan is actually spinning.

Symptoms

  • Engine overheating
  • Cooling fan runs incorrectly
  • Check engine light on

Common causes

  • Faulty fan speed sensor
  • Damaged wiring or connector
  • Failing cooling fan motor
  • Faulty PCM

Diagnostic steps

  1. Scan for stored codes
  2. Inspect fan sensor wiring
  3. Check fan speed signal with scan tool
  4. Test cooling fan operation
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