AutoCodes – Generic – C1662

C1662 Code - Ambient Temperature High

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when the Parking Assist ECU judges that the temperature has increased to a point that can cause a malfunction of the parking assist ECU. Common causes include Faulty Parking Assist ECU, Parking Assist ECU harness is open or shorted, Parking Assist ECU 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: C1662 indicates Ambient Temperature High.
Common causes: Common causes include Faulty Parking Assist ECU, Parking Assist ECU harness is open or shorted, Parking Assist ECU 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 4,626

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 Nov 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1662 Description

This Diagnostic Trouble Code (DTC) is stored when the Parking Assist ECU judges that the temperature has increased to a point that can cause a malfunction of the parking assist ECU.

OBDII Code C1662 - Ambient Temperature High - AutoCodes.com — C1662 Code - Ambient Temperature High

What does this mean?

What are the Possible Causes of the DTC C1662?

Faulty Parking Assist ECU
Parking Assist ECU harness is open or shorted
Parking Assist ECU circuit poor electrical connection

How to Fix the DTC C1662?

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 C1662 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 C1662 code?

Need more information on how to fix the C1662 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1662 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1662 Hyundai — Auto Learning failure
C1662 KIA — Auto Learning failure
C1662 Lexus — Ambient Temperature High
C1662 Toyota — Ambient Temperature High

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 C1662 Code

1. What are the common symptoms of OBDII code C1662 (Ambient Temperature High)?

The common symptoms of OBDII code C1662 include incorrect ambient temperature readings on the vehicle's display, issues with the HVAC system, and possible climate control malfunctions.

2. What can cause OBDII code C1662 to trigger?

OBDII code C1662 (Ambient Temperature High) can be triggered by a faulty ambient temperature sensor, wiring issues, or a malfunction in the climate control module.

3. How can I diagnose the cause of OBDII code C1662?

To diagnose the cause of OBDII code C1662, you can use a diagnostic scanner to retrieve the code, check the ambient temperature sensor's wiring for any damage or loose connections, and test the sensor's resistance to determine if it is faulty.

4. Is it safe to continue driving with OBDII code C1662 present?

While it may be safe to continue driving with OBDII code C1662 present, it is recommended to address the issue promptly to ensure accurate temperature readings and proper functioning of the HVAC system.

5. Can I repair OBDII code C1662 on my own?

Repairing OBDII code C1662 may be possible on your own if you have the necessary tools and knowledge. However, if you are unsure about diagnosing or fixing the issue, it is advisable to seek assistance from a qualified mechanic.

6. Will resetting the fault codes make OBDII code C1662 go away?

Resetting the fault codes may temporarily clear OBDII code C1662, but if the underlying issue, such as a faulty ambient temperature sensor, is not addressed, the code is likely to reappear.

7. What are some tips for repairing OBDII code C1662 (Ambient Temperature High)?

Some tips for repairing OBDII code C1662 include checking and repairing any damaged wiring, testing and replacing the ambient temperature sensor if necessary, and ensuring proper connections in the climate control system.

8. How much does it typically cost to repair OBDII code C1662?

The cost to repair OBDII code C1662 can vary depending on the cause of the issue, the labor rates in your area, and the cost of any parts that need to be replaced. It is best to consult a mechanic for an accurate estimate.

9. Can extreme weather conditions affect OBDII code C1662?

Yes, extreme weather conditions such as very high ambient temperatures can sometimes trigger OBDII code C1662. It is important to consider environmental factors when diagnosing and repairing this code.

10. Will OBDII code C1662 cause any long-term damage to my vehicle if left untreated?

While OBDII code C1662 may not cause immediate damage to your vehicle, leaving it untreated could lead to inaccuracies in temperature readings and potential issues with the climate control system over time. It is best to address the code promptly to avoid any long-term complications.