OBD Guide
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B1253

Air Temperature Internal Sensor Circuit Short To Ground

B1253 is an OBD-II diagnostic trouble code meaning: Air Temperature Internal Sensor Circuit Short To Ground. Common causes: wiring harness damage, temperature sensor malfunction. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Incorrect operation of the climate system
  • Displaying incorrect interior temperature
  • Check engine light comes on

Causes

  • Wiring harness damage
  • Temperature sensor malfunction
  • Damage to connectors or contacts
  • Short circuit in the circuit

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the connections and contacts of the sensor
  3. Replace temperature sensor if necessary
  4. Check circuit resistance to specifications

Related codes

B1252B1254

FAQ

What does the B1253 code mean?

B1253 is an OBD-II diagnostic trouble code that indicates: Air Temperature Internal Sensor Circuit Short To Ground

What causes a B1253 error code?

The most common causes of B1253 include: Wiring harness damage; Temperature sensor malfunction; Damage to connectors or contacts; Short circuit in the circuit.

How do I fix a B1253 diagnostic trouble code?

To fix B1253: Check the integrity of the wiring harness. Check the connections and contacts of the sensor. Replace temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1253?

Limited driving only, diagnose soon

How much does it cost to fix B1253?

The estimated repair cost for B1253 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat