C0274 Scion Code - Short to B+ in ABS Motor Relay Circuit
Quick Answer
The Anti-Lock Brake System (ABS) motor relay built into the Skid Control ECU (Brake Actuator Assembly) supplies the power to the ABS Pump Motor. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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
- C0274 Scion indicates Short to B+ in ABS Motor Relay Circuit.
- Common causes
- Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 C0274 Scion Description
What are the Possible Causes of the DTC C0274 Scion?
- Faulty Skid Control ECU (Brake Actuator Assembly)
- Skid Control ECU harness is open or shorted
- Skid Control ECU circuit poor electrical connection
How to Fix the DTC C0274 Scion?
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 C0274 Scion 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 C0274 Scion Code
1. What does the OBDII code C0274 mean on a Scion?
C0274 indicates a "Short to B+ in ABS Motor Relay Circuit," meaning there's an electrical issue in the ABS motor relay circuit, specifically a short to battery voltage.
2. What are the common symptoms of code C0274 in a Scion?
Symptoms include the ABS warning light illuminating, loss of ABS functionality, and potentially reduced braking performance.
3. What causes the C0274 code to appear on a Scion?
The most common causes are a short circuit in the ABS motor relay wiring, a faulty ABS motor relay, or a damaged ABS control module.
4. Can I still drive my Scion with the C0274 code?
While the vehicle may still be drivable, the ABS system will likely be disabled, which could increase the risk of losing control during hard braking or slippery road conditions.
5. How do I diagnose the C0274 code on my Scion?
Start by inspecting the ABS motor relay and its wiring for damage or shorts. Then test the relay itself and check for proper voltage and continuity in the circuit.
6. How is the C0274 code typically fixed?
Repairs may include replacing the ABS motor relay, repairing damaged wiring, or, in some cases, replacing the ABS control module if it's found to be faulty.
7. What tools are needed to diagnose and repair the C0274 code?
You'll need a multimeter to check for shorts and continuity, a scan tool for reading and clearing codes, and potentially a wiring diagram for the ABS system.
8. How much does it cost to repair the C0274 code?
Costs vary depending on the cause. Replacing an ABS motor relay typically costs $50–$150, while more extensive repairs like wiring fixes or a new ABS module can range from $200–$1,200.
9. Can a blown fuse cause the C0274 code?
Yes, a blown ABS fuse can cause an electrical issue in the circuit, but it’s more often caused by a short or damaged wiring.
10. Do I need to reprogram the ABS module after repairing code C0274?
In most cases, reprogramming is not needed unless the ABS module itself is replaced. However, clearing the code with a scan tool will be necessary after repairs.
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