AutoCodes – Generic – U1113

U1113 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 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 33,149

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

What does this mean?

What are the Possible Causes of the DTC U1113?

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?

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 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 U1113 code?

Need more information on how to fix the U1113 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1113 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1113 Audi — Invalid Or Missing Data For Primary Id
U1113 Chrysler — Lost A/C Pressure Message
U1113 Dodge — Lost A/C Pressure Message
U1113 Jeep — Lost A/C Pressure Message
U1113 RAM — Lost A/C Pressure Message
U1113 Volkswagen — Invalid Or Missing Data For Primary Id

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 Code

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

The common symptoms of U1113 include a non-functioning air conditioning system, lack of cool air from the vents, and a warning light on the dashboard.

2. What are the possible causes of OBDII code U1113?

The possible causes of U1113 include a faulty A/C pressure sensor, damaged wiring or connectors in the A/C system, low refrigerant levels, or a malfunctioning HVAC control module.

3. How can I diagnose the issue related to OBDII code U1113?

Diagnosing U1113 involves using a diagnostic scanner to read the code, checking the A/C pressure sensor and related components for any visible damage, and testing the electrical connections in the A/C system.

4. What are some repair tips for fixing OBDII code U1113?

Repair tips for U1113 include replacing a faulty A/C pressure sensor, repairing any damaged wiring or connectors, refilling refrigerant levels, and resetting the HVAC control module.

5. Can I continue driving my vehicle with OBDII code U1113?

It is not recommended to drive your vehicle with U1113 for an extended period, as it may lead to further damage to the A/C system. It is best to address the issue promptly.

6. How much does it cost to repair OBDII code U1113?

The cost of repairing U1113 can vary depending on the underlying cause, the parts needed for replacement, and labor costs. It is advisable to get a quote from a professional mechanic.

7. Is it possible to reset OBDII code U1113 without fixing the issue?

While you can clear the code temporarily using a diagnostic scanner, the underlying issue causing U1113 will persist until it is properly repaired.

8. Can extreme weather conditions trigger OBDII code U1113?

Extreme weather conditions, such as high temperatures or humidity, can sometimes exacerbate issues related to U1113 if the A/C system is under additional strain.

9. Will OBDII code U1113 affect the overall performance of my vehicle?

While U1113 specifically relates to the A/C system, ignoring the issue can impact your comfort while driving and may lead to further complications if left unresolved.

10. How often does OBDII code U1113 occur in vehicles?

U1113 is a relatively common OBDII code that can occur in vehicles with A/C systems, especially older vehicles or those with high mileage. Regular maintenance can help prevent this issue.