C1304 Lexus Code - EPS Control System Malfunction
Quick Answer
The Skid Control ECU communicates with the Power Steering ECU via CAN communication. Common causes include Faulty Electronic Power Steering (EPS) Control System, Faulty Brake Control System. 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
- C1304 Lexus indicates EPS Control System Malfunction.
- Common causes
- Common causes include Faulty Electronic Power Steering (EPS) Control System, Faulty Brake Control System.
- 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 C1304 Lexus Description
What are the Possible Causes of the DTC C1304 Lexus?
- Faulty Electronic Power Steering (EPS) Control System
- Faulty Brake Control System
How to Fix the DTC C1304 Lexus?
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 C1304 Lexus 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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Frequently Asked Questions about C1304 Lexus Code
1. What does OBDII code C1304 mean on a Lexus?
C1304 indicates an "EPS Control System Malfunction," which refers to an issue with the Electric Power Steering (EPS) system.
2. What are the symptoms of code C1304 in a Lexus?
Common symptoms include a stiff or unresponsive steering wheel, the EPS warning light illuminated on the dashboard, and reduced or complete loss of power steering assistance.
3. What causes the C1304 code to appear in a Lexus?
Possible causes include a faulty EPS control module, damaged wiring or connectors in the EPS system, low voltage or battery issues, or issues with the torque sensor.
4. Can a weak battery cause code C1304 in a Lexus?
Yes, a weak or failing battery can cause voltage issues that may trigger the EPS Control System Malfunction code.
5. How is the C1304 code diagnosed in a Lexus?
A mechanic will use a scan tool to read the code, inspect wiring and connectors for damage, test the EPS module, and check the vehicle’s battery and charging system.
6. Can I drive my Lexus with a C1304 code?
While the vehicle may still be drivable, the steering could be significantly harder to control, especially at low speeds, which can be unsafe. It’s recommended to address the issue promptly.
7. How do you fix the C1304 code on a Lexus?
Repairs may include replacing the EPS control module, repairing damaged wiring, cleaning or reconnecting connectors, or addressing any battery or voltage issues.
8. Is the C1304 code covered under warranty for a Lexus?
Depending on your vehicle’s age and mileage, the EPS system may still be covered under the powertrain or extended warranty. Check with your Lexus dealer for details.
9. How much does it cost to repair the C1304 code in a Lexus?
Repair costs can vary but may range from $200 to $1,500, depending on whether the issue is simple (like wiring repair) or requires EPS control module replacement.
10. Can a software update fix the C1304 code in a Lexus?
In some cases, a software update for the EPS control module may resolve the issue if it’s due to a programming error. Consult your Lexus dealer to check for applicable updates.
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