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P1160 Subaru Code - Return Spring Failure

Quick Answer

The P1160 Subaru diagnostic trouble code refers to a "Return Spring Failure" within the vehicle's system. Common causes include Wear and tear on the return spring, Corrosion or rust affecting the return spring, Improper installation of the return spring. 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
P1160 Subaru indicates Return Spring Failure.
Common causes
Common causes include Wear and tear on the return spring, Corrosion or rust affecting the return spring, Improper installation of the return spring.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1160 Subaru Description

The P1160 Subaru diagnostic trouble code refers to a "Return Spring Failure" within the vehicle's system. This code indicates that there is an issue with the return spring, which is a crucial component in the operation of various systems within the vehicle. The return spring is responsible for ensuring that certain components return to their original position after being actuated. In the case of a failure, this can lead to a variety of performance issues and potential long-term effects on the vehicle.

OBDII Code P1160 Subaru - Return Spring Failure
P1160 Subaru Code - Return Spring Failure

Common Causes of P1160 Subaru

  1. Wear and tear on the return spring
  2. Corrosion or rust affecting the return spring
  3. Improper installation of the return spring
  4. Manufacturing defect in the return spring

Symptoms of P1160 Subaru

  1. Decreased engine performance
  2. Reduced fuel efficiency
  3. Rough idling
  4. Stalling
  5. Difficulty starting the vehicle

How to Fix P1160 Subaru

  1. Diagnose the specific system affected by the return spring failure
  2. Remove the faulty return spring
  3. Replace the return spring with a new, high-quality component
  4. Test the system to ensure proper operation
  5. Clear the diagnostic trouble code and reset the vehicle's computer system

Cost to Fix P1160 Subaru

The cost of repairing a return spring failure can vary depending on the specific vehicle make and model, as well as the location and labor rates of the auto repair shop. In general, the parts and labor for this repair may range from $200 to $500. It is advisable to obtain a detailed estimate from a qualified mechanic or repair shop to determine the exact cost for your vehicle.

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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.

Frequently Asked Questions about P1160 Subaru Code

1. What does the OBDII code P1160 mean for a Subaru?

P1160 indicates a "Return Spring Failure," which refers to an issue with the throttle return spring in the throttle body assembly.

2. What are the common symptoms of code P1160 on a Subaru?

Symptoms may include poor throttle response, difficulty accelerating, engine hesitation, and in some cases, the Check Engine Light turning on.

3. What causes the P1160 code to trigger on a Subaru?

The most common causes include a broken or worn throttle return spring, debris in the throttle body, or a malfunctioning throttle position sensor.

4. Can I drive my Subaru with the P1160 code active?

Driving with this code is not recommended as it can affect throttle control and potentially lead to unsafe driving conditions.

5. How do I fix the P1160 code on my Subaru?

Repairs may involve cleaning or replacing the throttle return spring, inspecting the throttle body for debris, and checking the throttle position sensor for proper operation.

6. How much does it cost to fix a P1160 code on a Subaru?

Repair costs vary but typically range from $100 to $300, depending on whether the throttle spring or related components need replacement.

7. Can a dirty throttle body cause the P1160 code?

Yes, a dirty or clogged throttle body can restrict the throttle return spring's movement and trigger the P1160 code.

8. Is the P1160 code common in all Subaru models?

This code is not very common but may appear in specific Subaru models with electronic throttle control systems.

9. Do I need a professional mechanic to fix the P1160 code?

While some DIYers may handle cleaning the throttle body or inspecting the spring, replacing the spring or diagnosing sensors may require a professional mechanic.

10. What tools are needed to diagnose and repair the P1160 code?

Basic tools like a socket set, throttle body cleaner, and an OBDII scanner are helpful, but more advanced diagnostics may require a multimeter or professional equipment.

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