OBD Guide
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B1227

Open In The Outside Air Temperature Sensor Circuit

B1227 is an OBD-II diagnostic trouble code meaning: Open In The Outside Air Temperature Sensor Circuit. Common causes: broken wires in the sensor harness, outside air temperature sensor malfunction. Estimated repair cost: $11–56.

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

Symptoms

  • Incorrect display of outside temperature
  • Non-functioning or malfunctioning climate control
  • Check Engine light comes on

Causes

  • Broken wires in the sensor harness
  • Outside air temperature sensor malfunction
  • Damaged or oxidized connectors
  • Problems with the on-board computer

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Inspect connectors for damage or oxidation
  3. Check the resistance of the temperature sensor
  4. Replace sensor if necessary
  5. Clean or replace connectors if problems are found

Related codes

B1228B1229P0112P0113

FAQ

What does the B1227 code mean?

B1227 is an OBD-II diagnostic trouble code that indicates: Open In The Outside Air Temperature Sensor Circuit

What causes a B1227 error code?

The most common causes of B1227 include: Broken wires in the sensor harness; Outside air temperature sensor malfunction; Damaged or oxidized connectors; Problems with the on-board computer.

How do I fix a B1227 diagnostic trouble code?

To fix B1227: Check the integrity of the sensor wiring harness. Inspect connectors for damage or oxidation. Check the resistance of the temperature sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1227?

Limited driving only, diagnose soon

How much does it cost to fix B1227?

The estimated repair cost for B1227 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat