AutoCodes – RAM – U11D0 RAM

U11D0 RAM Code - Lost Ignition Key Status Message

Quick Answer

This diagnostic checks for the availability of the Ignition Key Status signal which is sent by the Body Controller Module (BCM) via a Controller Area Network (CAN) message. Common causes include Faulty Powertrain Control Module (PCM), Faulty Body Control Module (BCM). 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: U11D0 RAM indicates Lost Ignition Key Status Message.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Faulty Body Control Module (BCM).
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 470

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U11D0 RAM Description

This diagnostic checks for the availability of the Ignition Key Status signal which is sent by the Body Controller Module (BCM) via a Controller Area Network (CAN) message. The Ignition Key Status possible values include the following: 0) Lock, 1) Off, 2) Accessory, 3) Off and Accessory, 4) Run, 5) Start, and 7) Signal Not Available (SNA). The diagnostic checks the signal availability by checking if the received value is not equal to the SNA default value. When the signal is not available, the BCM sends an SNA default value to the Transmission Control Module (TCM). If the TCM reads this value then the Diagnostic Trouble Code (DTC) U11D0 is set.

OBDII Code U11D0 RAM - Lost Ignition Key Status Message - AutoCodes.com — U11D0 RAM Code - Lost Ignition Key Status Message

What does this mean?

What are the Possible Causes of the DTC U11D0 RAM?

Faulty Powertrain Control Module (PCM)
Faulty Body Control Module (BCM)

How to Fix the DTC U11D0 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 U11D0 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 U11D0 RAM Code

1. What does the OBDII code U11D0 RAM Lost Ignition Key Status Message indicate?

The U11D0 code signifies that the vehicle's onboard computer has lost communication with the ignition key status message stored in the Random Access Memory (RAM).

2. What are the common symptoms of the U11D0 code?

Common symptoms include issues with starting the vehicle, loss of power, and the inability to engage the ignition system properly.

3. What are the possible causes of the U11D0 code?

Potential causes of the U11D0 code include a faulty ignition key, a problem with the ignition key transmitter, issues with the vehicle's immobilizer system, or a malfunction in the onboard computer.

4. How can I diagnose the U11D0 code?

Diagnosing the U11D0 code typically involves using an OBDII scanner to retrieve the code and then performing a thorough inspection of the ignition key system, immobilizer system, and related components.

5. How can I repair the U11D0 code?

Repairing the U11D0 code may involve reprogramming the ignition key, replacing a faulty key transmitter, resetting the immobilizer system, or addressing any underlying issues with the vehicle's computer system.

6. Can I drive my vehicle with the U11D0 code present?

It is not recommended to drive the vehicle with the U11D0 code active, as it may lead to further issues with starting the vehicle or potential security concerns related to the ignition system.

7. How much does it typically cost to repair the U11D0 code?

The cost of repairing the U11D0 code can vary depending on the underlying cause and the specific repairs needed, but it may range from a few hundred to a few thousand dollars.

8. Can I reset the U11D0 code on my own?

While you may be able to clear the U11D0 code using an OBDII scanner, it is important to address the root cause of the issue to prevent the code from reappearing.

9. Is the U11D0 code a common issue in certain vehicle makes or models?

The U11D0 code may be more prevalent in vehicles equipped with advanced immobilizer systems or keyless entry systems, but it can potentially occur in any vehicle with similar components.

10. How can I prevent the U11D0 code from appearing in the future?

To prevent the U11D0 code from reoccurring, it is essential to regularly maintain the ignition key system, ensure the key transmitters are functioning correctly, and address any issues promptly to avoid communication errors with the onboard computer.