AutoCodes – Dodge – U1518 Dodge

U1518 Dodge 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 Dodge 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.

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Code Popularity 850

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
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Code U1518 Dodge Description

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

What does this mean?

What are the Possible Causes of the DTC U1518 Dodge?

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 Dodge?

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 Dodge 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 Dodge code?

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

Need Help with the Code?

Get the U1518 Dodge 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 Dodge Code

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

The common symptoms of OBDII code U1518 in a Dodge vehicle include inaccurate ambient air temperature readings on the dashboard, issues with the HVAC system, and potential illumination of the Check Engine Light.

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

The U1518 code in a Dodge vehicle can be caused by a faulty ambient air temperature sensor, wiring issues, damaged connectors, or a malfunctioning HVAC control module.

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

Diagnosing the U1518 code in a Dodge vehicle involves checking the ambient air temperature sensor for proper operation, inspecting the wiring and connectors for any damage, and using a scan tool to retrieve and analyze the code.

4. Can I continue driving my Dodge vehicle with the U1518 code present?

It is generally safe to drive your Dodge vehicle with the U1518 code, but you may experience issues with the HVAC system or inaccurate temperature readings. It is recommended to address the issue promptly to prevent further complications.

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

To repair the U1518 code in your Dodge vehicle, you may need to replace the ambient air temperature sensor, repair any damaged wiring or connectors, or recalibrate the HVAC control module. It is advisable to consult a professional mechanic for an accurate diagnosis and repair.

6. Is the U1518 code in a Dodge vehicle easy to fix?

The complexity of fixing the U1518 code in a Dodge vehicle depends on the underlying cause. Simple issues like a loose connector may be easy to fix, while replacing a faulty sensor or repairing wiring may require more technical expertise.

7. Will resetting the OBDII code U1518 make it go away permanently?

Resetting the U1518 code may temporarily clear the Check Engine Light, but if the underlying issue is not addressed, the code is likely to return. It is important to diagnose and repair the root cause of the code for a permanent solution.

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

The cost of repairing the U1518 code in a Dodge vehicle can vary depending on the specific model, the extent of the issue, and labor rates in your area. It is recommended to obtain a few quotes from reputable mechanics to compare prices.

9. Can extreme weather conditions trigger the U1518 code in a Dodge vehicle?

Extreme weather conditions such as extreme heat or cold can potentially affect the ambient air temperature sensor and trigger the U1518 code in a Dodge vehicle. Ensuring proper insulation and protection of the sensor can help prevent weather-related issues.

10. Is the U1518 code specific to Dodge vehicles only?

The U1518 code related to an implausible ambient air temperature signal is not specific to Dodge vehicles and can occur in various car makes and models. The diagnostic and repair steps may vary slightly depending on the manufacturer.