P0528 Fault Code

Fan Speed Sensor Circuit No Signal

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0528 fault code indicates that there is no signal being received from the fan speed sensor circuit. This sensor plays a crucial role in monitoring the speed of the cooling fan, ensuring that the engine stays within optimal temperature ranges. When this code is triggered, it suggests that the engine control module (ECM) is not receiving any data from the fan speed sensor, which could lead to overheating or inefficient engine performance.

What are the symptoms of the P0528 code?

Drivers may notice a variety of symptoms when this code is present:

• The engine temperature may rise, indicating potential overheating.
• The cooling fan may remain off or operate at incorrect speeds.
• Poor engine performance or fuel efficiency could be experienced due to improper cooling.

What causes the P0528 code?

Common causes for the P0528 code include:

• A faulty fan speed sensor that has failed completely.
• Damaged wiring or connectors within the fan speed sensor circuit.
• A malfunctioning engine control module (ECM) affecting communication.
• Incorrect fan installation or a failure within the fan itself.

How to fix P0528?

To resolve the P0528 fault code, mechanics typically follow these steps:

• Inspect the wiring and connectors for any visible damage or disconnection.
• Test the fan speed sensor with a multimeter to verify its functionality.
• Replace the fan speed sensor if it is found to be faulty.
• Check the ECM for any software issues or malfunctions that could need reprogramming or replacement.