Cooling Fan Speed Sensor

Cooling fan speed sensor circuit.

Cooling fan speed sensor.

If during operation the pcm detects a loss of the cooling fan speed signal dtc p0526 will set. Replace the harness with an improved design part no. 89024920 and tape the wires to prevent. In order to maintain proper powertrain cooling requirements and to reduce the cooling fan noise as it is in use the pcm uses a signal from the cooling fan to assess its speed.

It is considered generic because it applies to all makes and models of vehicles 1996 newer although specific repair steps may vary depending on the model. The damage occurs because the harness pulls out of its plastic protective sleeve exposing the insulation to the sharp edges of the sleeve. This diagnostic trouble code dtc is a generic obd ii powertrain code. If the fan comes on you may have a bad temperature sensor or gauge.

The hall effect sensor returns a signal pulse through the speed signal circuit in response to the reluctor track which is located inside the fan clutch. The p0526 code means that the pcm detected a voltage reading that was either too low or too high from the electric cooling fan control circuit. A cooling fan temperature switch or sensor in some vehicles can also get stuck which may cause the fan to run continuously any time you turn the ignition key on or start the engine. What the p0526 code means.

Thus it s good to monitor the fan speed using an advanced scan tool to verify if the actual fan speed matches the commanded fan speed.