C1555 Scion Code - Power Steering Motor Relay Welding Failure
Quick Answer
The Power Steering ECU supplies current to the Power Steering Motor through this circuit. Common causes include Faulty Power Steering Motor Assembly, Power Steering Motor Assembly harness is open or shorted, Power Steering Motor Assembly 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
- C1555 Scion indicates Power Steering Motor Relay Welding Failure.
- Common causes
- Common causes include Faulty Power Steering Motor Assembly, Power Steering Motor Assembly harness is open or shorted, Power Steering Motor Assembly 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 C1555 Scion Description
What are the Possible Causes of the DTC C1555 Scion?
- Faulty Power Steering Motor Assembly
- Power Steering Motor Assembly harness is open or shorted
- Power Steering Motor Assembly circuit poor electrical connection
- Faulty Power Steering ECU
How to Fix the DTC C1555 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1555 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 C1555 Scion Code
1. What does the OBDII code C1555 mean on a Scion?
C1555 indicates a Power Steering Motor Relay Welding Failure, meaning the relay controlling the power steering motor is stuck in the "on" position.
2. What are the symptoms of code C1555 in a Scion?
Symptoms may include heavy or stiff steering, the power steering warning light being illuminated, or intermittent power steering operation.
3. What causes the C1555 code in Scion vehicles?
Common causes include a faulty power steering motor relay, damaged wiring or connectors in the power steering system, or an internal issue within the power steering control module.
4. Can I drive my Scion with the C1555 code?
Driving with this code is possible but not recommended, as the loss of power steering assistance can make steering difficult and unsafe, especially at low speeds.
5. How do I diagnose the C1555 code on a Scion?
Start by inspecting the power steering motor relay, wiring, and connectors for damage or corrosion. Use a scan tool to check for related codes and monitor the power steering system's operation.
6. How do I fix the C1555 code in a Scion?
Repairs may include replacing the power steering motor relay, repairing damaged wiring, or reprogramming or replacing the power steering control module if necessary.
7. How much does it cost to fix the C1555 code in a Scion?
Repair costs can vary but typically range from $100 to $300 for parts and labor, depending on whether the relay or other components need replacement.
8. Can a weak battery cause the C1555 code?
While unlikely, a weak or failing battery can sometimes cause electrical issues, so it’s a good idea to check the battery's health to rule it out.
9. Is C1555 specific to Scion vehicles?
No, C1555 can appear in other Toyota family vehicles with similar electronic power steering systems, as they share similar components and designs.
10. Do I need to reset the power steering system after fixing C1555?
Yes, after repairs, clearing the code with an OBDII scan tool and testing the system is necessary to ensure the issue is resolved.
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