AutoCodes – Chrysler – U1518 Chrysler

U1518 Chrysler Code - Implausible Ambient Ait Temperature Signal Received

Quick Answer

The Powertrain Control Module (PCM) receives an implausible signal from the Ambient Temperature Sensor over the Controller Area Network (CAN) C bus from the Body Control Module (BCM). Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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: U1518 Chrysler indicates Implausible Ambient Ait Temperature Signal Received.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 615

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 Jun 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U1518 Chrysler Description

OBDII Code U1518 Chrysler - Implausible Ambient Ait Temperature Signal Received - AutoCodes.com — U1518 Chrysler Code - Implausible Ambient Ait Temperature Signal Received

What does this mean?

What are the Possible Causes of the DTC U1518 Chrysler?

Faulty Body Control Module (BCM)
Body Control Module harness is open or shorted
Body Control Module circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U1518 Chrysler?

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 U1518 Chrysler 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 U1518 Chrysler code?

Need more information on how to fix the U1518 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1518 Chrysler code diagnosed by a professional: Find a repair shop in your area

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 U1518 Chrysler Code

1. What are the common symptoms of OBDII code U1518 in a Chrysler vehicle?

- Common symptoms include incorrect ambient air temperature readings on the dashboard, air conditioning system malfunctions, and potential issues with the engine's performance.

2. What are the possible causes of the U1518 code in a Chrysler vehicle?

- The code U1518 is typically triggered by a faulty ambient air temperature sensor, wiring issues in the ambient air temperature sensor circuit, or a malfunction in the body control module (BCM).

3. How can I diagnose the U1518 code in my Chrysler vehicle?

- To diagnose the U1518 code, you can start by inspecting the ambient air temperature sensor and its wiring for any damage or corrosion. You may also need to perform a BCM scan to identify any communication issues.

4. Can I drive my Chrysler with the U1518 code?

- It is generally safe to drive your Chrysler with the U1518 code, but you may experience inaccurate temperature readings and potential issues with your air conditioning system. We recommend addressing the issue promptly to prevent further complications.

5. How can I repair the U1518 code in my Chrysler vehicle?

- Repairing the U1518 code may involve replacing the ambient air temperature sensor, repairing or replacing damaged wiring, or reprogramming the BCM. It is recommended to consult a qualified mechanic for an accurate diagnosis and repair.

6. Is the U1518 code a serious issue in a Chrysler vehicle?

- While the U1518 code is not considered a critical issue, it can affect the functionality of certain vehicle systems, such as the air conditioning system. Prompt diagnosis and repair are recommended to ensure optimal performance.

7. Can weather conditions affect the U1518 code in my Chrysler?

- Extreme weather conditions, such as excessive heat or cold, can potentially affect the ambient air temperature sensor readings and trigger the U1518 code. However, the issue is more likely related to sensor or wiring malfunctions.

8. How much does it typically cost to repair the U1518 code in a Chrysler vehicle?

- The cost of repairing the U1518 code in a Chrysler vehicle can vary depending on the exact cause of the issue and the labor rates in your area. On average, you can expect to pay between $100 to $300 for parts and labor.

9. Can I reset the U1518 code in my Chrysler without fixing the underlying issue?

- While you can clear the U1518 code with an OBDII scanner, the code is likely to return if you do not address the underlying problem. It is recommended to diagnose and repair the issue to prevent further complications.

10. How long does it take to repair the U1518 code in a Chrysler vehicle?

- The repair time for the U1518 code can vary depending on the exact cause of the issue and the complexity of the repair. In general, it may take a few hours to a full day to diagnose and repair the problem.