AutoCodes – Jeep – U1433 Jeep

U1433 Jeep Code - Implausible Igntion Switch Status Message Received

Quick Answer

The Body Control Module (BCM) monitors the hardwired ignition switch input circuit from the Radio Frequency (RF) Hub module and compares it to the ignition switch status message received over the Controller Area Network (CAN) bus. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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: U1433 Jeep indicates Implausible Igntion Switch Status Message Received.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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 3,456

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 May 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1433 Jeep Description

The Body Control Module (BCM) monitors the hardwired ignition switch input circuit from the Radio Frequency (RF) Hub module and compares it to the ignition switch status message received over the Controller Area Network (CAN) bus. The Diagnostic Trouble Code (DTC) sets when the RF Hub receives a Bussed Input message of the Ignition Switch status from the BCM. If that message does not agree with the RF Hub Ignition Switch status, this code will set. The BCM also sends an Ignition Switch "Sensor" message. If the RF Hub and the BCM do not agree on Both of those messages, the Powertrain Control Module (PCM) will not allow the engine to start.

OBDII Code U1433 Jeep - Implausible Igntion Switch Status Message Received - AutoCodes.com — U1433 Jeep Code - Implausible Igntion Switch Status Message Received

What does this mean?

What are the Possible Causes of the DTC U1433 Jeep?

Faulty Body Control Module (BCM)
Body Control Module (BCM) harness is open or shorted
Body Control Module (BCM) circuit poor electrical connection
Faulty Radio Frequency Hub (RF Hub)

How to Fix the DTC U1433 Jeep?

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 U1433 Jeep 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 U1433 Jeep code?

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Need Help with the 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 U1433 Jeep Code

1. What are the common symptoms of OBDII code U1433 in a Jeep?

- Common symptoms include issues with starting the vehicle, intermittent power loss, and the illumination of the Check Engine Light.

2. What does the OBDII code U1433 - Implausible Ignition Switch Status Message Received mean in a Jeep?

- This code indicates that the vehicle's onboard computer has detected a communication error related to the ignition switch status message.

3. What are the possible causes of OBDII code U1433 in a Jeep?

- Possible causes include a faulty ignition switch, wiring issues in the ignition switch circuit, or a malfunction in the vehicle's computer system.

4. How can I diagnose the OBDII code U1433 in my Jeep?

- Diagnosing this code typically involves conducting a thorough inspection of the ignition switch, checking the wiring for any damage, and using a diagnostic scanner to retrieve specific error codes.

5. Can I still drive my Jeep with the U1433 code present?

- It is generally not recommended to drive the vehicle with this code present, as it may lead to further electrical issues or potential safety hazards.

6. How can I repair the OBDII code U1433 in my Jeep?

- Repairing this code often involves replacing the faulty ignition switch, repairing any damaged wiring, and clearing the error codes using a diagnostic scanner.

7. Is it possible to reset the U1433 code in a Jeep without fixing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the underlying issue to prevent the code from reappearing and causing further problems.

8. How much does it cost to fix the U1433 code in a Jeep?

- The cost of fixing this code can vary depending on the specific issue, but it may involve expenses for parts, labor, and diagnostic services.

9. Can a DIY enthusiast repair the U1433 code in a Jeep?

- While some DIY enthusiasts may have the skills to address this issue, it is recommended to consult a professional mechanic for an accurate diagnosis and proper repair.

10. How long does it take to repair the U1433 code in a Jeep?

- The repair time can vary based on the exact cause of the code and the complexity of the repair process, but it typically ranges from a few hours to a full day.