AutoCodes – Scion – B1402 Scion

B1402 Scion Code - Immobiliser Key Check NG

Quick Answer

The Main Body ECU (Network Gateway ECU) stores this code if an improper key (a key not registered in the main body ECU (network gateway ECU)) is inserted into the ignition key cylinder. Common causes include Faulty Key, Faulty Main Body ECU (Network Gateway ECU). 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: B1402 Scion indicates Immobiliser Key Check NG.
Common causes: Common causes include Faulty Key, Faulty Main Body ECU (Network Gateway ECU).
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 1,860

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 Apr 07, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1402 Scion Description

The Main Body ECU (Network Gateway ECU) stores this code if an improper key (a key not registered in the main body ECU (network gateway ECU)) is inserted into the ignition key cylinder. The OBDII code sets when an improper key (a key not registered in the main body ECU (network gateway ECU)) is inserted into the ignition key cylinder.

OBDII Code B1402 Scion - Immobiliser Key Check NG - AutoCodes.com — B1402 Scion Code - Immobiliser Key Check NG

What does this mean?

What are the Possible Causes of the DTC B1402 Scion?

Faulty Key
Faulty Main Body ECU (Network Gateway ECU)

How to Fix the DTC B1402 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 B1402 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 B1402 Scion Code

1. What are the common symptoms of OBDII code B1402 in a Scion related to the Immobiliser Key Check NG?

- Common symptoms include difficulty starting the vehicle, the engine not turning over, and the ignition not recognizing the key.

2. What does the "Immobiliser Key Check NG" mean in the context of OBDII code B1402 for a Scion?

- "NG" stands for "No Good," indicating that the immobilizer system does not recognize the key being used to start the vehicle.

3. What are the possible causes of OBDII code B1402 (Immobiliser Key Check NG) in a Scion?

- Possible causes include a faulty key transponder, a malfunctioning immobilizer unit, issues with the key fob battery, or wiring problems in the immobilizer system.

4. Can I still drive my Scion if OBDII code B1402 (Immobiliser Key Check NG) is triggered?

- In most cases, the vehicle may not start or will experience difficulty starting when this code is triggered, making it unsafe to drive until the issue is resolved.

5. How can I diagnose and repair OBDII code B1402 (Immobiliser Key Check NG) in my Scion?

- To diagnose this issue, you may need a professional OBDII scanner to read the code and pinpoint the exact cause. Repairs may involve reprogramming the key, replacing the key fob battery, or repairing/replacing the immobilizer unit.

6. Will resetting the OBDII code B1402 (Immobiliser Key Check NG) in my Scion fix the issue?

- While clearing the code may temporarily remove the warning light, the underlying problem causing the code to trigger will still need to be addressed to ensure the vehicle functions properly.

7. Is it possible to bypass or disable the immobilizer system to avoid OBDII code B1402 in my Scion?

- Bypassing or disabling the immobilizer system is not recommended, as it can compromise the security of your vehicle and may lead to other issues down the line.

8. Are there any DIY tips for troubleshooting OBDII code B1402 (Immobiliser Key Check NG) in a Scion?

- DIY tips may include checking the key fob battery, ensuring the key is properly programmed, and inspecting the wiring connections related to the immobilizer system.

9. How much does it typically cost to repair OBDII code B1402 (Immobiliser Key Check NG) in a Scion?

- The cost of repairs for this code can vary depending on the exact cause of the issue, but it may range from replacing a key fob battery to more involved repairs with the immobilizer unit.

10. Can a locksmith or dealership help with resolving OBDII code B1402 (Immobiliser Key Check NG) in my Scion?

- Yes, locksmiths and dealerships with the necessary equipment and expertise can assist in diagnosing and repairing issues related to the immobilizer system and OBDII code B1402.