AutoCodes – Jeep – U103C Jeep

U103C Jeep Code - Keyless Ignition Node Communication

Quick Answer

The Diagnostic Trouble Code (DTC) sets whenever the Radio Frequency Hub (RF Hub) senses an open, or a short to ground on the Security Keyless Line Communication circuit. Common causes include Faulty Keyless Ignition Node (KIN), Keyless Ignition Node harness is open or shorted, Keyless Ignition Node 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
U103C Jeep indicates Keyless Ignition Node Communication.
Common causes
Common causes include Faulty Keyless Ignition Node (KIN), Keyless Ignition Node harness is open or shorted, Keyless Ignition Node 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 4,921
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 22, 2020
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Code U103C Jeep Description

The Diagnostic Trouble Code (DTC) sets whenever the Radio Frequency Hub (RF Hub) senses an open, or a short to ground on the Security Keyless Line Communication circuit.
OBDII Code U103C Jeep - Keyless Ignition Node Communication - AutoCodes.com
U103C Jeep Code - Keyless Ignition Node Communication

What are the Possible Causes of the DTC U103C Jeep?

  • Faulty Keyless Ignition Node (KIN)
  • Keyless Ignition Node harness is open or shorted
  • Keyless Ignition Node circuit poor electrical connection
  • Faulty Radio Frequency Hub (RF Hub)

How to Fix the DTC U103C 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 U103C 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 U103C Jeep code?

Need more information on how to fix the U103C Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U103C Jeep 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 U103C Jeep Code

1. What are common symptoms of OBDII code U103C in a Jeep related to Keyless Ignition Node Communication?

- Common symptoms include issues with starting the vehicle, keyless entry system malfunctions, and dashboard warning lights illuminating.

2. What can cause the OBDII code U103C related to Keyless Ignition Node Communication in a Jeep?

- The code U103C can be triggered by faulty key fobs, a malfunctioning keyless ignition node, wiring issues, or a communication breakdown between components.

3. How can I diagnose the OBDII code U103C in my Jeep?

- Diagnosing the code U103C may require using a professional OBDII scanner to read the code, checking the key fobs for proper functionality, and inspecting the keyless ignition node for any visible damage.

4. Can I continue driving my Jeep with the U103C code related to Keyless Ignition Node Communication?

- It is not recommended to continue driving the vehicle with the U103C code present, as it may lead to further electrical system issues or potential starting problems.

5. What are some repair tips for fixing the OBDII code U103C in a Jeep?

- Repair tips may include reprogramming the key fobs, checking and repairing any damaged wiring, replacing the keyless ignition node if necessary, and clearing the code with an OBDII scanner.

6. How much does it typically cost to repair the OBDII code U103C in a Jeep?

- The cost of repairing the U103C code can vary depending on the underlying cause, but it may range from a few hundred dollars to over a thousand dollars for parts and labor.

7. Can I reset the OBDII code U103C in my Jeep without fixing the underlying issue?

- While you can clear the code temporarily with an OBDII scanner, it is important to address the underlying problem to prevent the code from reoccurring and potentially causing further issues.

8. Are there any DIY solutions for resolving the OBDII code U103C related to Keyless Ignition Node Communication in a Jeep?

- DIY solutions may include checking and replacing the key fob batteries, inspecting and cleaning key fob contacts, and ensuring proper communication between components.

9. Will the OBDII code U103C cause my Jeep to fail an emissions test?

- The U103C code itself may not directly cause a failed emissions test, but it is recommended to address and repair the issue to ensure optimal vehicle performance and compliance.

10. How long does it typically take to repair the OBDII code U103C related to Keyless Ignition Node Communication in a Jeep?

- The repair time can vary depending on the complexity of the issue, but it may take a few hours to a day for diagnosis, parts replacement, and clearing the code.

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