AutoCodesLexus – C1392 Lexus

C1392 Lexus Code - Un–Correction Of A Zero Point Of The Stroke Sensor

Quick Answer

The stroke sensor inputs the pedal stroke into the Skid Control ECU. Common causes include Faulty Stroke Sensor, Stroke Sensor harness is open or shorted, Stroke Sensor 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
C1392 Lexus indicates Un–Correction Of A Zero Point Of The Stroke Sensor.
Common causes
Common causes include Faulty Stroke Sensor, Stroke Sensor harness is open or shorted, Stroke Sensor 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 4,804
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 27, 2020
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Code C1392 Lexus Description

The stroke sensor inputs the pedal stroke into the Skid Control ECU. The Skid Control ECU monitors the Stroke Sensor. The Skid Control ECU sets the OBDII code when the Stroke Sensor is not to factory specifications.
OBDII Code C1392 Lexus - Un–Correction Of A Zero Point Of The Stroke Sensor - AutoCodes.com
C1392 Lexus Code - Un–Correction Of A Zero Point Of The Stroke Sensor

What are the Possible Causes of the DTC C1392 Lexus?

  • Faulty Stroke Sensor
  • Stroke Sensor harness is open or shorted
  • Stroke Sensor circuit poor electrical connection
  • Faulty Skid Control ECU

How to Fix the DTC C1392 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 C1392 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 C1392 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.

Frequently Asked Questions about C1392 Lexus Code

1. What does the Lexus OBDII code C1392 mean?

C1392 indicates "Un-Correction of a Zero Point of the Stroke Sensor," which means the stroke sensor is not properly calibrated or its zero point is invalid.

2. What are the common symptoms of the C1392 code in a Lexus?

Symptoms may include ABS or traction control warning lights, reduced braking performance, or activation of fail-safe modes.

3. What causes the C1392 code to appear in a Lexus?

This code can be caused by faulty stroke sensors, issues with the ABS module, wiring problems, or failure to properly calibrate the sensor after a repair.

4. How can I fix the C1392 code in my Lexus?

Inspect and repair any damaged wiring or connectors, recalibrate the stroke sensor using a scan tool, or replace the stroke sensor if it’s faulty.

5. What is the stroke sensor in a Lexus?

The stroke sensor is part of the braking system and measures brake pedal movement to assist in ABS, traction control, and stability functions.

6. Do I need special tools to fix the C1392 code?

Yes, fixing this code typically requires an advanced scan tool capable of performing zero-point calibration and reading ABS system data.

7. Can I drive my Lexus with the C1392 code active?

Driving with the C1392 code is not recommended as it may impact the performance of critical safety systems like ABS and traction control.

8. How is the zero-point calibration performed for the stroke sensor?

Zero-point calibration is done using a scan tool to reset the stroke sensor data so the ECU can correctly interpret brake pedal movement.

9. Can a weak battery cause the C1392 code in a Lexus?

Yes, a weak or failing battery can cause voltage irregularities that may result in the stroke sensor losing its zero-point calibration.

10. How much does it cost to repair the C1392 code in a Lexus?

Repair costs can vary but typically range from $100 to $400, depending on whether recalibration, wiring repairs, or sensor replacement is required.

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