AutoCodes – Lexus – C1434 Lexus

C1434 Lexus Code - Steering Angle Sensor Output Malfunction

Quick Answer

The Steering Angle Sensor signals are sent to the Skid Control ECU (Brake Actuator Assembly) via the Control Area Network (CAN) communication system. Common causes include Faulty Steering Angle Sensor (Spiral Cable), Steering Angle Sensor power supply, Steering Angle Sensor harness is open or shorted. 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: C1434 Lexus indicates Steering Angle Sensor Output Malfunction.
Common causes: Common causes include Faulty Steering Angle Sensor (Spiral Cable), Steering Angle Sensor power supply, Steering Angle Sensor harness is open or shorted.
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 1,796

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jan 29, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code C1434 Lexus Description

The Steering Angle Sensor signals are sent to the Skid Control ECU (Brake Actuator Assembly) via the Control Area Network (CAN) communication system. When there is a malfunction in the CAN communication system, it will be detected by the steering angle sensor zero point malfunction diagnostic function. The Skid Control ECU (Brake Actuator Assembly) monitors the Steering Angle Sensor. The Skid Control ECU (Brake Actuator Assembly) sets the Diagnostic Trouble Code (DTC) code when the Steering Angle Sensor is not to factory specifications.

OBDII Code C1434 Lexus - Steering Angle Sensor Output Malfunction - AutoCodes.com — C1434 Lexus Code - Steering Angle Sensor Output Malfunction

What does this mean?

What are the Possible Causes of the DTC C1434 Lexus?

Faulty Steering Angle Sensor (Spiral Cable)
Steering Angle Sensor power supply
Steering Angle Sensor harness is open or shorted
Steering Angle Sensor circuit poor electrical connection
Faulty Skid Control ECU (Brake Actuator Assembly)

How to Fix the DTC C1434 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 C1434 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.

Need more information about the C1434 Lexus code?

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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.