C1191 Code - Rear Out ABS Solenoid
Quick Answer
The control unit computes the wheel rotating speed by the signal sent from the sensor. Common causes include Faulty ABS Actuator/Electric Unit, ABS Actuator/Electric Unit harness is open or shorted, ABS Actuator/Electric Unit poor electrical connection. 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 ABS Actuator/Electric Unit, ABS Actuator/Electric Unit harness is open or shorted, ABS Actuator/Electric Unit poor electrical connection.
- 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.
Code C1191 Description
The ABS actuator and electric unit (control unit) contains: An electric motor and pump, Two relays, Eight solenoid valves ( each inlet and outlet for LH front, RH front, LH rear, RH rear), and ABS control unit.
These components control the hydraulic circuit that increases, holds or decreases hydraulic pressure to all or individual wheels. The ABS actuator and electric unit (control unit) cannot be disassembled and must be replaced as an assembly.
What are the Possible Causes of the DTC C1191?
- Faulty ABS Actuator/Electric Unit
- ABS Actuator/Electric Unit harness is open or shorted
- ABS Actuator/Electric Unit poor electrical connection
How to Fix the DTC C1191?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1191 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the C1191 code?
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Information for Specific Makes
- C1191 Infiniti — Rear Out ABS Solenoid
- C1191 Nissan — Rear Out ABS Solenoid
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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