Engine-CodesBuick – P1185 Buick

P1185 Buick Code - Engine Oil Temperature Sensor Circuit

Quick Answer

The P1185 Buick code refers to a problem with the Engine Oil Temperature Sensor Circuit. Common causes include Faulty Engine Oil Temperature Sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to sensor connections. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1185 Buick indicates Engine Oil Temperature Sensor Circuit.
Common causes
Common causes include Faulty Engine Oil Temperature Sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to sensor connections.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1185 Buick Description

The P1185 Buick code refers to a problem with the Engine Oil Temperature Sensor Circuit. This sensor is responsible for monitoring the temperature of the engine oil, providing crucial data to the engine control module to ensure proper engine performance and efficiency. When this sensor circuit malfunctions or fails, it can lead to a variety of issues that can affect the vehicle's performance and overall health.

OBDII Code P1185 Buick - Engine Oil Temperature Sensor Circuit
P1185 Buick Code - Engine Oil Temperature Sensor Circuit

Common Causes of P1185 Buick

  1. Faulty Engine Oil Temperature Sensor
  2. Wiring or connector issues in the sensor circuit
  3. Corrosion or damage to sensor connections
  4. Engine oil contamination affecting sensor performance
  5. Engine control module malfunction

Symptoms of P1185 Buick

  1. Check engine light illuminated on the dashboard
  2. Inaccurate or erratic engine temperature readings
  3. Engine overheating or running hotter than normal
  4. Decreased fuel efficiency
  5. Engine misfires or rough idling

How to Fix P1185 Buick

  1. Begin by diagnosing the issue using an OBD-II scanner to confirm the P1185 Buick code.
  2. Inspect the Engine Oil Temperature Sensor and its wiring for any damage or corrosion.
  3. Test the sensor's resistance and voltage to determine if it is functioning correctly.
  4. Replace the Engine Oil Temperature Sensor if it is faulty, ensuring proper installation and connection.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1185 Buick

The cost of repairing a P1185 Buick code related to the Engine Oil Temperature Sensor Circuit can vary depending on the root cause of the issue. Generally, the cost of replacing the sensor itself ranges from $50 to $150, while labor costs can add another $80 to $150 per hour. Overall, the total repair cost can range from $150 to $300 or more, depending on the specific circumstances and parts needed. It's essential to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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