OBD Guide
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C1662

Ambient Temperature High

C1662 is an OBD-II diagnostic trouble code meaning: Ambient Temperature High. Common causes: ambient temperature sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $11–56.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • Incorrect temperature readings on the instrument panel
  • Problems with climate control
  • False overheating warnings

Causes

  • Ambient temperature sensor malfunction
  • Open or short circuit in wiring harness
  • Poor contact in the sensor connector
  • Temporary extreme weather conditions

How to Fix

  1. Check the temperature sensor readings using a diagnostic scanner
  2. Inspect the wiring harness and sensor connectors for damage.
  3. Replace ambient temperature sensor if necessary
  4. Clean or replace connectors if there is corrosion.

Related codes

P0112P0113P0070

FAQ

What does the C1662 code mean?

C1662 is an OBD-II diagnostic trouble code that indicates: Ambient Temperature High

What causes a C1662 error code?

The most common causes of C1662 include: Ambient temperature sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; Temporary extreme weather conditions.

How do I fix a C1662 diagnostic trouble code?

To fix C1662: Check the temperature sensor readings using a diagnostic scanner. Inspect the wiring harness and sensor connectors for damage.. Replace ambient temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1662?

Limited driving only, diagnose soon

How much does it cost to fix C1662?

The estimated repair cost for C1662 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat