P0528

Fan Speed Sensor Circuit No Signal

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–89 (est.)

Symptoms

Engine overheating
Cooling fan malfunction
Check engine light comes on
Unpredictable fan operation

Causes

Open or short circuit in fan speed sensor wiring harness
Fan speed sensor malfunction
Poor connection or corrosion in the sensor connector
Malfunction of the engine control unit (ECU)

How to Fix

Check the integrity of the fan speed sensor wiring harness
Check connections and sensor connector for corrosion or damage.
Measure the resistance of the fan speed sensor and compare with standard values
If necessary, replace the fan speed sensor
Check fan operation after repair

Related codes

P0480 P0481 P0482