P0941 Fault Code

Hydraulic Oil Temperature Sensor Circuit Intermittent

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

The P0941 fault code indicates an intermittent issue with the Hydraulic Oil Temperature Sensor Circuit. This sensor plays a crucial role in monitoring the temperature of the hydraulic fluid, which can affect various systems in the vehicle, especially in automatic transmissions. When the sensor experiences malfunctions or intermittent signals, it can lead to improper transmission function and potentially serious performance issues.

What are the symptoms of the P0941 code?

Common symptoms associated with the P0941 code include:

• Unusual transmission behaviors, such as slipping or harsh shifting.
• Warning lights illuminated on the dashboard, including the check engine light.
• Decreased fuel efficiency due to improper transmission operation.
• Overheating of the transmission if the fluid temperature is not accurately monitored.

What causes the P0941 code?

Several factors can lead to the P0941 code, including:

• Faulty hydraulic oil temperature sensor.
• Poor electrical connections or damaged wiring in the sensor circuit.
• Short circuits or open circuits that disrupt the electrical flow.
• Contamination or degradation of hydraulic fluid.
• Issues with the engine control unit (ECU) misinterpreting sensor input due to software errors.

How to fix P0941?

To address the P0941 fault code, technicians typically perform the following steps:

• Inspect the hydraulic oil temperature sensor for damage and replace it if necessary.
• Check all wiring and connections for signs of wear, corrosion, or loose connections and repair them.
• Test the sensor operation with a multimeter to ensure it is providing accurate readings.
• Consider changing the hydraulic fluid if it is contaminated or degraded.
• If problems persist, reflash or update the ECU software to eliminate any potential miscommunication issues.