AutoCodes – RAM – U103C RAM

U103C RAM 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 RAM 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 6,002

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 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U103C RAM 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 RAM - Keyless Ignition Node Communication - AutoCodes.com — U103C RAM Code - Keyless Ignition Node Communication

What does this mean?

What are the Possible Causes of the DTC U103C RAM?

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 RAM?

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 RAM 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 U103C RAM Code

1. What are the common symptoms of OBDII code U103C RAM related to Keyless Ignition Node Communication?

- Common symptoms include issues with starting the vehicle, intermittent or complete loss of keyless entry functionality, and warning lights on the dashboard.

2. What are some possible causes of OBDII code U103C RAM for Keyless Ignition Node Communication?

- Possible causes may include a faulty keyless ignition node, wiring or connection problems, software issues, or a malfunctioning key fob.

3. How can I diagnose the OBDII code U103C RAM for Keyless Ignition Node Communication?

- Diagnosis typically involves using a scan tool to retrieve the code, inspecting the keyless ignition node and related components for physical damage, and testing the wiring and connections.

4. Can I still drive my vehicle with the OBDII code U103C RAM related to Keyless Ignition Node Communication?

- It is not recommended to drive the vehicle with this code present, as it may lead to further issues with starting the vehicle or keyless entry system.

5. How can I repair OBDII code U103C RAM for Keyless Ignition Node Communication?

- Repair methods may include replacing the keyless ignition node, repairing or replacing damaged wiring, updating software, or reprogramming key fobs.

6. Are there any DIY tips for addressing OBDII code U103C RAM related to Keyless Ignition Node Communication?

- DIY tips may include checking and securing connections, inspecting for visible damage, and ensuring the key fob batteries are not depleted.

7. Is it necessary to visit a mechanic for OBDII code U103C RAM for Keyless Ignition Node Communication?

- It is recommended to seek professional help from a qualified mechanic to accurately diagnose and repair the issue associated with this code.

8. Can resetting the vehicle's computer clear the OBDII code U103C RAM for Keyless Ignition Node Communication?

- Resetting the computer may temporarily clear the code, but it is important to address the underlying issue to prevent it from reoccurring.

9. How much does it typically cost to repair OBDII code U103C RAM related to Keyless Ignition Node Communication?

- Repair costs can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Will ignoring OBDII code U103C RAM for Keyless Ignition Node Communication cause further damage to my vehicle?

- Ignoring this code may lead to more severe starting or keyless entry problems, increased risk of vehicle theft, and potential damage to other electronic components.