AutoCodes – Lexus – C1662 Lexus

C1662 Lexus 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 Lexus 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 796

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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

What does this mean?

What are the Possible Causes of the DTC C1662 Lexus?

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 Lexus?

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 Lexus 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 C1662 Lexus Code

1. What are the common symptoms of OBDII code C1662 in a Lexus related to ambient temperature being too high?

The common symptoms include the ambient temperature reading on the vehicle's display being unusually high, even in normal weather conditions.

2. What are the possible causes of OBDII code C1662 in a Lexus indicating an ambient temperature that is too high?

Possible causes include a faulty ambient temperature sensor, wiring issues, or a problem with the vehicle's climate control system.

3. How can I diagnose the issue related to OBDII code C1662 in a Lexus myself?

You can start by checking the wiring and connections to the ambient temperature sensor for any damage or corrosion. You can also use a multimeter to test the sensor's resistance and compare it to the manufacturer's specifications.

4. Is it safe to continue driving my Lexus with OBDII code C1662 indicating an ambient temperature that is too high?

It is generally safe to continue driving, but you may experience issues with the climate control system or inaccurate temperature readings until the problem is resolved.

5. How can I reset OBDII code C1662 in a Lexus after fixing the issue with the ambient temperature sensor?

You can reset the code using an OBDII scan tool or by disconnecting the vehicle's battery for a few minutes. Make sure to drive the vehicle for a while after resetting to ensure the code does not return.

6. Can extreme weather conditions affect the ambient temperature sensor and trigger OBDII code C1662 in a Lexus?

Yes, extreme heat or cold can sometimes cause the ambient temperature sensor to malfunction, leading to erroneous readings and triggering the OBDII code.

7. Are there any quick fixes or temporary solutions for OBDII code C1662 in a Lexus before I can get it repaired?

You can try cleaning the ambient temperature sensor with electronic contact cleaner to see if that resolves the issue temporarily. However, it's recommended to get the sensor replaced for a permanent fix.

8. Will replacing the ambient temperature sensor in a Lexus fix OBDII code C1662 indicating high ambient temperature?

In most cases, replacing the ambient temperature sensor will resolve the issue and clear the OBDII code. However, it's important to ensure that the new sensor is properly calibrated and functioning correctly.

9. How much does it typically cost to repair OBDII code C1662 related to high ambient temperature in a Lexus?

The cost of repair can vary depending on the labor rates and the price of the ambient temperature sensor. On average, you can expect to pay between $100 to $300 for parts and labor.

10. Is it necessary to visit a dealership or can an independent mechanic repair OBDII code C1662 in a Lexus?

An independent mechanic with experience working on Lexus vehicles should be able to diagnose and repair the issue related to OBDII code C1662. However, visiting a dealership may be necessary if the repair involves specialized tools or software.