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Engine-Codes – Generic – C1289

C1289 Code - Pressure Transducer Redundant / Secondary Input Circuit Failure

Quick Answer

The C1289 diagnostic trouble code (DTC) indicates a problem with the pressure transducer redundant or secondary input circuit in the vehicle's brake system. Common causes include Damaged or corroded wiring/connectors in the pressure transducer circuit, Faulty pressure transducer components, Malfunctioning ESC control module. 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
C1289 indicates Pressure Transducer Redundant / Secondary Input Circuit Failure.
Common causes
Common causes include Damaged or corroded wiring/connectors in the pressure transducer circuit, Faulty pressure transducer components, Malfunctioning ESC control module.
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 07, 2024
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Code C1289 Description

The C1289 diagnostic trouble code (DTC) indicates a problem with the pressure transducer redundant or secondary input circuit in the vehicle's brake system. This code is typically found in vehicles equipped with an electronic stability control (ESC) system, as the pressure transducer plays a crucial role in monitoring and adjusting brake pressure to improve vehicle stability and control.

OBDII Code C1289 - Pressure Transducer Redundant / Secondary Input Circuit Failure
C1289 Code - Pressure Transducer Redundant / Secondary Input Circuit Failure

Common Causes of C1289

  1. Damaged or corroded wiring/connectors in the pressure transducer circuit
  2. Faulty pressure transducer components
  3. Malfunctioning ESC control module
  4. Hydraulic issues in the brake system, such as air bubbles or leaks
  5. Electronic interference or voltage irregularities affecting the pressure transducer circuit

Symptoms of C1289

  1. Illuminated ABS or ESC warning lights on the dashboard
  2. Increased stopping distances or reduced braking performance
  3. Unusual noises or sensations during braking, such as grinding or pulsating
  4. Loss of traction or stability during cornering or sudden maneuvers
  5. Inconsistent brake pedal feel or response

How to Fix C1289

  1. Perform a thorough inspection of the pressure transducer circuit, including wiring, connectors, and components, to identify any visible damage or corrosion.
  2. Test the pressure transducer and its associated components for proper functionality using a diagnostic scan tool or multimeter.
  3. Check the ESC control module for any fault codes or malfunctions that may be triggering the C1289 DTC.
  4. Address any hydraulic issues in the brake system, such as bleeding the brake lines or repairing leaks, to ensure proper pressure modulation.
  5. Clear the DTC from the vehicle's memory using a scan tool after completing the repair process and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix C1289

The cost of repairing a Pressure Transducer Redundant / Secondary Input Circuit Failure can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, you can expect to pay anywhere from $200 to $500 for parts and labor to address this problem. It's important to note that diagnostic time and labor rates can vary significantly, so it's advisable to obtain quotes from multiple shops or dealerships in your area to get a more accurate estimate. Additionally, the cost may be higher if the pressure transducer or other components need to be replaced.

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Code C1289 Information for Specific Makes

  • C1289 Ford — Pressure Transducer Redundant / Secondary Input Circuit Failure
  • C1289 Lincoln — Pressure Transducer Redundant / Secondary Input Circuit Failure
  • C1289 Mercury — Pressure Transducer Redundant / Secondary Input Circuit Failure
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 C1289 Code

1. What are the common symptoms of OBDII code C1289, Pressure Transducer Redundant / Secondary Input Circuit Failure?

- Common symptoms include the illumination of the check engine light, issues with the vehicle's braking system, and potential loss of ABS functionality.

2. What can cause OBDII code C1289 to trigger?

- This code is typically triggered by a fault in the pressure transducer's redundant or secondary input circuit, which may be caused by wiring issues, sensor malfunctions, or electronic control module failures.

3. How serious is OBDII code C1289, Pressure Transducer Redundant / Secondary Input Circuit Failure?

- This code should be addressed promptly as it can affect the proper functioning of the vehicle's ABS system, potentially compromising braking performance and overall safety.

4. Can I continue driving with OBDII code C1289 active?

- It is not recommended to drive with this code active, as it may lead to compromised ABS functionality, increasing the risk of accidents or loss of vehicle control during braking.

5. How can I diagnose the issue related to OBDII code C1289?

- Proper diagnosis requires using a professional OBDII scanner to retrieve the code, followed by inspecting the pressure transducer, wiring, and related components for any visible signs of damage or malfunction.

6. What are some repair tips for addressing OBDII code C1289?

- Repair options may include repairing or replacing damaged wiring, replacing the pressure transducer, or addressing any issues with the electronic control module to resolve the circuit failure.

7. Will clearing the OBDII code C1289 make the issue go away?

- Clearing the code without addressing the underlying cause will not fix the issue. It is essential to diagnose and repair the root cause of the circuit failure to prevent the code from reoccurring.

8. How much does it typically cost to repair OBDII code C1289?

- Repair costs can vary depending on the extent of the damage and the specific components that need to be replaced. It's advisable to consult a professional mechanic for an accurate cost estimate.

9. Can a DIY enthusiast fix OBDII code C1289 at home?

- While some basic troubleshooting steps can be performed at home, diagnosing and repairing the underlying issue causing OBDII code C1289 may require advanced tools and expertise, so it's recommended to seek professional help.

10. How can I prevent OBDII code C1289 from occurring in the future?

- Regular maintenance, such as checking the ABS system components for wear and tear, ensuring proper wiring connections, and addressing any warning signs promptly, can help prevent the recurrence of this code.

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