AutoCodes – Hyundai – P161B Hyundai

P161B Hyundai Code - Battery Disconnect/TCM Internal

Quick Answer

The Transmission Control Module (TCM) has detected that the calculated checksum does not match the stored checksum configuration or the TCM has encountered an interruption in the TCM power source. Common causes include Low Vehicle Battery Charge, Faulty Transmission Control Module (TCM), TCM Software Calibration. 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: P161B Hyundai indicates Battery Disconnect/TCM Internal.
Common causes: Common causes include Low Vehicle Battery Charge, Faulty Transmission Control Module (TCM), TCM Software Calibration.
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 17,008

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 Feb 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P161B Hyundai Description

The Transmission Control Module (TCM) has detected that the calculated checksum does not match the stored checksum configuration or the TCM has encountered an interruption in the TCM power source.

OBDII Code P161B Hyundai - Battery Disconnect/TCM Internal - AutoCodes.com — P161B Hyundai Code - Battery Disconnect/TCM Internal

What does this mean?

What are the Possible Causes of the DTC P161B Hyundai?

Low Vehicle Battery Charge
Faulty Transmission Control Module (TCM)
TCM Software Calibration
TCM harness is open or shorted
TCM circuit poor electrical connection

How to Fix the DTC P161B Hyundai?

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 P161B Hyundai 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 P161B Hyundai code?

Need more information on how to fix the P161B Hyundai code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P161B Hyundai code diagnosed by a professional: Find a repair shop in your area

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 P161B Hyundai Code

1. What are the common symptoms of OBDII code P161B in a Hyundai vehicle?

- Common symptoms include difficulty shifting gears, harsh shifting, transmission slippage, and the transmission going into limp mode.

2. What does the OBDII code P161B in a Hyundai indicate?

- The code P161B indicates a battery disconnect or a Transmission Control Module (TCM) internal fault in the vehicle.

3. What are the possible causes of OBDII code P161B in a Hyundai?

- The possible causes include a faulty TCM, a disconnected battery, wiring issues, software glitches, or a defective transmission control module.

4. How can I diagnose the OBDII code P161B in my Hyundai?

- To diagnose the code, you can use an OBDII scanner to check for the specific error code, inspect the TCM and battery connections, and perform a thorough visual inspection of the wiring.

5. Can I still drive my Hyundai with the OBDII code P161B present?

- It is not recommended to drive the vehicle with the code P161B present, as it can lead to further transmission damage and safety issues. It is best to address the problem promptly.

6. How can I repair the OBDII code P161B in my Hyundai?

- Repair options include resetting the TCM, checking and reconnecting the battery properly, repairing any damaged wiring, and if necessary, replacing the TCM.

7. Is it safe to reset the TCM to clear the OBDII code P161B in my Hyundai?

- Resetting the TCM is a common troubleshooting step and is generally safe to do. However, if the underlying issue is not resolved, the code may reappear, indicating a persistent problem.

8. Can a DIY enthusiast fix the OBDII code P161B issue in a Hyundai?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the code P161B may require advanced diagnostic tools and technical expertise. It's recommended to consult a professional mechanic.

9. How much does it cost to repair the OBDII code P161B in a Hyundai at a dealership?

- The cost of repairing the OBDII code P161B at a dealership can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. How urgent is it to address the OBDII code P161B in a Hyundai?

- It is important to address the OBDII code P161B promptly to prevent further damage to the transmission system and ensure the safety and reliability of your Hyundai vehicle.