AutoCodes – RAM – U1197 RAM

U1197 RAM Code - Security Seed Response Not Received From ECM/PCM

Quick Answer

Whenever the ignition is turned on or there is a remote start active, the Radio Frequency (RF) Hub performs a self-test and resynchronization routine. Common causes include Powertrain Control Module (PCM) Programming. 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: U1197 RAM indicates Security Seed Response Not Received From ECM/PCM.
Common causes: Common causes include Powertrain Control Module (PCM) Programming.
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 978

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 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1197 RAM Description

Whenever the ignition is turned on or there is a remote start active, the Radio Frequency (RF) Hub performs a self-test and resynchronization routine. During the routine, the RF Hub interrogates the FOBIK for the secret key information and performs a Controller Area Network (CAN) Bus message handshake with the Powertrain Control Module (PCM) to start the vehicle. The PCM must reply to the RF Hub that the secret key information matches to initiate the start sequence or this code will set. The Diagnostic Trouble Code (DTC) sets whenever the RF Hub performs a handshake with the PCM and does not receive a security seed response from the PCM.

OBDII Code U1197 RAM - Security Seed Response Not Received From ECM/PCM - AutoCodes.com — U1197 RAM Code - Security Seed Response Not Received From ECM/PCM

What does this mean?

What are the Possible Causes of the DTC U1197 RAM?

Powertrain Control Module (PCM) Programming

How to Fix the DTC U1197 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 U1197 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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Need more information on how to fix the U1197 RAM code? Get Access to Factory Service Manuals

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 U1197 RAM Code

1. What are the common symptoms of OBDII code U1197 RAM?

The common symptoms include the Check Engine Light (CEL) illuminating, poor engine performance, and potential issues with starting the vehicle.

2. What causes the OBDII code U1197 RAM to trigger?

This code is typically triggered when the security seed response is not received from the Engine Control Module (ECM) or Powertrain Control Module (PCM), indicating a communication issue between modules.

3. How can I diagnose the U1197 RAM code?

Diagnosing this code requires using a professional OBDII scanner to retrieve the trouble codes, checking for any related codes, and inspecting the wiring and connections between the ECM/PCM and security system components.

4. What are some common repair tips for resolving the U1197 RAM code?

Common repair tips include checking and repairing any damaged wiring or connections, ensuring the ECM/PCM is properly communicating with the security system, and potentially reprogramming or replacing the ECM/PCM.

5. Can I drive my vehicle with the U1197 RAM code present?

It is not recommended to drive the vehicle with the U1197 RAM code present, as it can lead to potential engine performance issues and may result in further damage if left unresolved.

6. How serious is the U1197 RAM code?

While the code itself may not cause immediate drivability issues, it indicates a communication problem between critical modules in the vehicle, which can lead to more serious problems if not addressed promptly.

7. Can resetting the trouble codes clear the U1197 RAM code?

Resetting the trouble codes may temporarily clear the U1197 RAM code, but it is important to diagnose and repair the underlying issue causing the code to prevent it from reoccurring.

8. Is the U1197 RAM code specific to a certain make or model of vehicle?

The U1197 RAM code can be found in various vehicle makes and models that utilize OBDII systems, but the specific meaning and repair procedures may vary between manufacturers.

9. How much does it typically cost to repair the U1197 RAM code?

The cost of repairing the U1197 RAM code can vary depending on the underlying cause, the need for parts replacement, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.

10. Can I fix the U1197 RAM code myself, or do I need a professional mechanic?

While some DIY enthusiasts may attempt to diagnose and repair the U1197 RAM code, it is recommended to seek the assistance of a professional mechanic with experience in diagnosing and resolving complex OBDII codes for more accurate and reliable repairs.