AutoCodes – Scion – C1533 Scion

C1533 Scion Code - Power Steering Temperature Sensor Circuit is Low or High

Quick Answer

The Power Steering ECU monitors itself for proper operation. Common causes include Faulty Power Steering ECU, Power Steering ECU harness is open or shorted, Power Steering 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: C1533 Scion indicates Power Steering Temperature Sensor Circuit is Low or High.
Common causes: Common causes include Faulty Power Steering ECU, Power Steering ECU harness is open or shorted, Power Steering 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.

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Code Popularity 894

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 31, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1533 Scion Description

The Power Steering ECU monitors itself for proper operation. The Power Steering ECU sets the Diagnostic Trouble Code (DTC) when it detects an internal malfunction. If the Power Steering ECU Assembly stores this DTC, it will shut off the motor relay circuit (built into the Power Steering ECU Assembly) and stop power assist. However, power assist continues if this DTC is output.

OBDII Code C1533 Scion - Power Steering Temperature Sensor Circuit is Low or High - AutoCodes.com — C1533 Scion Code - Power Steering Temperature Sensor Circuit is Low or High

What does this mean?

What are the Possible Causes of the DTC C1533 Scion?

Faulty Power Steering ECU
Power Steering ECU harness is open or shorted
Power Steering ECU circuit poor electrical connection

How to Fix the DTC C1533 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 C1533 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1533 Scion Code

1. What does the OBDII code C1533 mean on a Scion?

C1533 indicates an issue with the power steering temperature sensor circuit, where the sensor's signal is either too low or too high.

2. What are the symptoms of a C1533 code in a Scion?

Symptoms may include difficulty steering, intermittent or complete loss of power steering assist, and the power steering warning light illuminating.

3. What causes the C1533 code to appear?

The main causes include a faulty power steering temperature sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning power steering control module.

4. Is it safe to drive with a C1533 code?

While the vehicle may still be drivable, loss of power steering assist can make steering difficult, especially at low speeds, posing a safety risk.

5. How can I diagnose a C1533 code?

Start by inspecting the power steering sensor wiring and connectors for damage or corrosion. Use a multimeter to test the sensor's resistance and check for proper voltage.

6. Can a low power steering fluid level trigger a C1533 code?

No, this code is not directly related to fluid levels but to the electrical circuit of the temperature sensor. However, low fluid levels can cause other steering issues.

7. How much does it cost to fix a C1533 code?

Repairs can cost between $100 and $500, depending on whether you need to replace the sensor, repair wiring, or replace the control module.

8. Can I reset the C1533 code without fixing the issue?

You can clear the code with an OBDII scanner, but it will likely return if the underlying issue is not resolved.

9. What tools are needed to fix a C1533 code?

Basic tools include an OBDII scanner, a multimeter for testing electrical components, and possibly replacement parts like the temperature sensor or wiring.

10. Does the C1533 code affect other systems in the car?

No, C1533 specifically relates to the power steering system. However, a malfunctioning power steering system can indirectly affect overall vehicle handling.