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Engine-Codes – Generic – C1191

C1191 Code - Rear Out ABS Solenoid

Quick Answer

The C1191 code refers to an issue with the Rear Out ABS Solenoid in the vehicle's anti-lock braking system (ABS). Common causes include Faulty rear ABS solenoid, Corroded or damaged wiring connections to the solenoid, Issues with the ABS 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
C1191 indicates Rear Out ABS Solenoid.
Common causes
Common causes include Faulty rear ABS solenoid, Corroded or damaged wiring connections to the solenoid, Issues with the ABS 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 11, 2024
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Code C1191 Description

The C1191 code refers to an issue with the Rear Out ABS Solenoid in the vehicle's anti-lock braking system (ABS). The ABS solenoid is responsible for controlling the flow of brake fluid to the rear wheels during braking, helping to prevent wheel lock-up and allowing the driver to maintain control of the vehicle. When this solenoid malfunctions, it can impact the effectiveness of the ABS system, potentially leading to longer stopping distances, reduced braking performance, and an increased risk of skidding or loss of control during emergency braking situations.

OBDII Code C1191 - Rear Out ABS Solenoid
C1191 Code - Rear Out ABS Solenoid

Common Causes of C1191

  1. Faulty rear ABS solenoid
  2. Corroded or damaged wiring connections to the solenoid
  3. Issues with the ABS control module
  4. Contamination of brake fluid affecting solenoid operation
  5. Mechanical damage to the ABS components due to wear and tear

Symptoms of C1191

  1. Illumination of the ABS warning light on the dashboard
  2. Increased stopping distances during braking
  3. Pulsating brake pedal or unusual brake pedal feel
  4. Loss of ABS functionality, resulting in wheel lock-up during hard braking
  5. Difficulty maintaining control of the vehicle during emergency stops

How to Fix C1191

  1. Diagnose the issue using a professional OBD-II scanner to confirm the C1191 code and identify the specific cause of the problem.
  2. Inspect the wiring connections to the rear ABS solenoid for any corrosion or damage, repairing or replacing as needed.
  3. Test the ABS solenoid for proper operation and replace if found to be faulty.
  4. Check the ABS control module for any malfunctions or errors and address as necessary.
  5. Perform a comprehensive brake system test to ensure proper functionality and clear the ABS code from the vehicle's computer system.

Cost to Fix C1191

The cost of repairing a rear out ABS solenoid issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor to address this issue. Keep in mind that additional costs may apply if other ABS components need to be replaced or if further diagnostics are required. It's recommended to consult with a local auto repair shop to get a more accurate estimate based on your vehicle make and model.

What does this mean?

Tech Notes for C1191

The ABS has an electronic control unit to control major functions. The control unit accepts input signals from sensors and controls operation of the actuator. It is also important to check for conventional problems such as air leaks in the booster or lines, lack of brake fluid, or other problems with the brake system.

It is much more difficult to diagnose a problem that occurs intermittently rather than continuously. Most intermittent problems are caused by poor electrical connections or faulty wiring. In this case, careful checking of suspicious circuits may help prevent the replacement of good parts.

When is the Code Detected?

When the control unit detects a malfunction in the rear outlet solenoid circuit.

Need more information about the C1191 code?

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Need Help with the Code?

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Code C1191 Information for Specific Makes

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 C1191 Code

1. What are the common symptoms of OBDII code C1191 (Rear Out ABS Solenoid)?

- Common symptoms include the ABS warning light staying illuminated on the dashboard, inconsistent ABS system operation, and potential loss of traction control.

2. What are the possible causes of OBDII code C1191?

- The code C1191 can be triggered by a faulty rear out ABS solenoid, damaged wiring or connectors in the ABS system, or issues with the ABS control module.

3. How can I diagnose the cause of OBDII code C1191?

- Diagnosing OBDII code C1191 typically involves using a diagnostic scanner to retrieve the specific fault codes, conducting a visual inspection of ABS system components, and performing electrical tests on the rear out ABS solenoid.

4. Can I continue driving my vehicle with OBDII code C1191 active?

- It is not recommended to drive with OBDII code C1191 active, as it can compromise the effectiveness of the ABS system and traction control, potentially affecting the vehicle's safety and performance.

5. How can I repair OBDII code C1191 related to the Rear Out ABS Solenoid?

- Repairing OBDII code C1191 often involves replacing the faulty rear out ABS solenoid, repairing or replacing damaged wiring or connectors, and resetting the ABS system to clear the fault code.

6. Are there any DIY repair tips for OBDII code C1191?

- DIY enthusiasts with mechanical knowledge can attempt to replace the rear out ABS solenoid themselves by following the vehicle's service manual or seeking guidance from online resources.

7. How much does it typically cost to repair OBDII code C1191?

- The cost of repairing OBDII code C1191 can vary depending on the extent of the issue, the labor rates in your area, and whether you choose to replace the faulty component yourself or have it done by a professional mechanic.

8. Can OBDII code C1191 be intermittent?

- Yes, OBDII code C1191 can sometimes be intermittent, especially if the issue is related to a loose wire connection or a sporadically malfunctioning rear out ABS solenoid.

9. Will OBDII code C1191 cause my vehicle to fail an emissions test?

- OBDII code C1191 specifically relates to the ABS system and is not directly related to emissions, so it should not cause your vehicle to fail an emissions test.

10. How can I prevent OBDII code C1191 from recurring in the future?

- To prevent OBDII code C1191 from recurring, it's important to perform regular maintenance on the ABS system, address any warning signs promptly, and ensure proper installation of any replacement components.

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