C1312 Lexus Code - Short In Main Relay 1 Circuit
Quick Answer
The Anti-Lock Brake System (ABS) main relay 1 (ABS No.1 relay) supplies power to the changeover solenoid and the linear solenoid. Common causes include Faulty Anti-Lock Brake System (ABS) Main Relay 1, ABS Main Relay 1 harness is open or shorted, ABS Main Relay 1 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
- C1312 Lexus indicates Short In Main Relay 1 Circuit.
- Common causes
- Common causes include Faulty Anti-Lock Brake System (ABS) Main Relay 1, ABS Main Relay 1 harness is open or shorted, ABS Main Relay 1 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 C1312 Lexus Description
What are the Possible Causes of the DTC C1312 Lexus?
- Faulty Anti-Lock Brake System (ABS) Main Relay 1
- ABS Main Relay 1 harness is open or shorted
- ABS Main Relay 1 circuit poor electrical connection
How to Fix the DTC C1312 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 C1312 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 C1312 Lexus Code
1. What does the OBDII code C1312 mean on a Lexus?
C1312 indicates a "Short in Main Relay 1 Circuit," meaning the vehicle's main relay circuit has a short, potentially affecting the ABS or traction control system.
2. What are the symptoms of code C1312 on a Lexus?
Common symptoms include the ABS or traction control warning lights illuminating, loss of ABS functionality, and potentially reduced braking performance.
3. What causes the C1312 code to appear on a Lexus?
The most common causes are a short circuit within the main relay, damaged wiring or connectors, or a faulty ABS control module.
4. Is it safe to drive a Lexus with the C1312 code?
While the vehicle may still be drivable, the ABS system may not function correctly, increasing the risk of skidding during hard braking. It’s best to address the issue promptly.
5. How do you diagnose the C1312 code on a Lexus?
Diagnosis involves inspecting the main relay, checking the wiring and connectors for damage or shorts, and testing the ABS control module for proper functionality.
6. Can a faulty main relay cause the C1312 code?
Yes, a faulty main relay is one of the primary causes of this code, as it can result in a short circuit in the relay's electrical components.
7. How can you fix the C1312 code on a Lexus?
Repairs may include replacing or repairing damaged wiring, replacing the main relay, or addressing faults in the ABS control module.
8. How much does it cost to repair the C1312 code on a Lexus?
The cost depends on the specific issue. Replacing a main relay may cost $50-$150, while ABS module repairs can be more expensive, ranging from $300 to $1,000.
9. Can a blown fuse trigger the C1312 code on a Lexus?
A blown fuse could be a symptom rather than the cause, as it may blow due to a short in the main relay circuit.
10. Can the C1312 code clear itself after repairs?
After repairs, the code may clear itself, but it’s often necessary to use an OBDII scanner to erase the code and verify that the issue is resolved.
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