AutoCodes – RAM – U1113 RAM

U1113 RAM Code - Lost A/C Pressure Message

Quick Answer

The A/C Pressure Transducer signal is a direct input to the Totally Integrated Power Module (TIPM). Common causes include Faulty Totally Integrated Power Module (TIPM), Totally Integrated Power Module (TIPM) harness is open or shorted, Totally Integrated Power Module (TIPM) 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: U1113 RAM indicates Lost A/C Pressure Message.
Common causes: Common causes include Faulty Totally Integrated Power Module (TIPM), Totally Integrated Power Module (TIPM) harness is open or shorted, Totally Integrated Power Module (TIPM) 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 827

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 21, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1113 RAM Description

The A/C Pressure Transducer signal is a direct input to the Totally Integrated Power Module (TIPM). The TIPM busses the A/C pressure signal over the Controlled Area Network (CAN) bus the Powertrain Control Module (PCM). The Diagnostic Trouble Code (DTC) sets when the PCM doesn't receive the A/C Pressure signal over the CAN C bus from the Body Control Module (BCM). The circuit is continuously monitored. One Trip fault.

OBDII Code U1113 RAM - Lost A/C Pressure Message - AutoCodes.com — U1113 RAM Code - Lost A/C Pressure Message

What does this mean?

What are the Possible Causes of the DTC U1113 RAM?

Faulty Totally Integrated Power Module (TIPM)
Totally Integrated Power Module (TIPM) harness is open or shorted
Totally Integrated Power Module (TIPM) circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U1113 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 U1113 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 U1113 RAM Code

1. What are the common symptoms of OBDII code U1113 RAM Lost A/C Pressure Message?

- Common symptoms include loss of air conditioning functionality, poor cooling performance, and a warning light on the dashboard.

2. What causes the U1113 RAM Lost A/C Pressure Message code to appear?

- This code is typically triggered by a communication error between the A/C control module and other modules in the vehicle, leading to a loss of A/C pressure message.

3. How can I diagnose the U1113 code related to lost A/C pressure?

- A diagnostic scan tool can be used to retrieve the specific error code, pinpointing the communication issue between modules that is causing the lost A/C pressure message.

4. Are there any DIY repair tips for fixing the U1113 RAM code?

- DIY repair may involve checking and ensuring the proper connection of wiring harnesses and connectors related to the A/C system. However, for a more accurate diagnosis and repair, it's recommended to consult a professional mechanic.

5. Can driving with the U1113 code present cause further damage to the vehicle?

- While driving with the U1113 code may not immediately harm the vehicle, it is advisable to address the issue promptly to prevent any potential long-term impact on the A/C system.

6. Is it safe to continue using the vehicle with the U1113 RAM Lost A/C Pressure Message code displayed?

- It is generally safe to continue driving the vehicle with this code, but it's important to address the underlying issue to restore proper A/C functionality and avoid discomfort in hot weather.

7. How much does it typically cost to repair the U1113 code related to lost A/C pressure?

- Repair costs for the U1113 code can vary depending on the underlying cause and the labor rates of the repair shop. It's best to obtain a diagnosis and estimate from a qualified mechanic.

8. Can a simple reset of the vehicle's computer system clear the U1113 RAM code?

- In some cases, a simple reset of the vehicle's computer system may temporarily clear the code, but if the underlying issue causing the lost A/C pressure message persists, the code is likely to reappear.

9. Are there any preventive measures to avoid the U1113 RAM Lost A/C Pressure Message code in the future?

- Regular maintenance of the vehicle's A/C system, including checking for leaks, proper refrigerant levels, and ensuring electrical connections are secure, can help prevent the occurrence of this code.

10. Is the U1113 code specific to certain vehicle makes and models?

- The U1113 RAM code related to lost A/C pressure message can appear in various vehicle makes and models that are equipped with OBDII systems and A/C control modules.