C1147 Code - Switch-Over Solenoid Valve Line USV
Quick Answer
VDC Switch-Over Solenoid Valve (USV) (Cut Valve): The cut valve shuts off the normal brake fluid path from the master cylinder when VDC/TCS is activated. Common causes include Faulty ABS Actuator And Electric Unit, ABS Actuator And Electric Unit harness is open or shorted, ABS Actuator And Electric Unit circuit 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
- C1147 indicates Switch-Over Solenoid Valve Line USV.
- Common causes
- Common causes include Faulty ABS Actuator And Electric Unit, ABS Actuator And Electric Unit harness is open or shorted, ABS Actuator And Electric Unit circuit 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 C1147 Description
What are the Possible Causes of the DTC C1147?
- Faulty ABS Actuator And Electric Unit
- ABS Actuator And Electric Unit harness is open or shorted
- ABS Actuator And Electric Unit circuit poor electrical connection
How to Fix the DTC C1147?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1147 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.
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Information for Specific Makes
- C1147 Infiniti — Switch-Over Solenoid Valve Line USV
- C1147 Nissan — Switch-Over Solenoid Valve Line USV
Frequently Asked Questions about C1147 Code
1. What does the OBDII code C1147 mean?
C1147 refers to an issue with the Switch-Over Solenoid Valve Line (USV), which controls vacuum flow in certain vehicle systems.
2. What are common symptoms of the C1147 code?
Symptoms may include the ABS or traction control warning light activating, decreased braking performance, or unusual noises from the solenoid valve.
3. What causes the C1147 code to appear?
The code is typically caused by a faulty switch-over solenoid valve, damaged wiring, a vacuum leak, or corroded electrical connections.
4. How is the C1147 code diagnosed?
A mechanic will check for vacuum leaks, inspect the solenoid valve and wiring, and use diagnostic tools to confirm the fault.
5. Can I drive my vehicle with the C1147 code?
While the vehicle may still be drivable, it is not recommended as it could impact braking or stability systems, leading to safety concerns.
6. How do you fix the C1147 code?
Repairs may involve replacing the faulty solenoid valve, repairing or replacing damaged wiring, or sealing any vacuum leaks.
7. How much does it cost to repair a C1147 code?
Depending on the issue, repair costs can range from $100 to $300, with solenoid valve replacement being on the higher end.
8. Can a dirty solenoid valve trigger the C1147 code?
Yes, dirt or debris in the solenoid valve can obstruct proper operation and trigger the code.
9. Will clearing the C1147 code solve the problem?
Clearing the code may temporarily remove the warning light, but the underlying issue must be fixed to prevent the code from reappearing.
10. Is the C1147 code related to the ABS system?
Yes, this code can be associated with the ABS or traction control system, as the solenoid valve may impact these functions.
Discuss the causes and fixes for C1147 OBDII Code
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