OBD Guide
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B14A4

Refrigerant Pressure Sensor Circuit Short Circuit

B14A4 is an OBD-II diagnostic trouble code meaning: Refrigerant Pressure Sensor Circuit Short Circuit. Common causes: short circuit in the sensor circuit, refrigerant pressure sensor malfunction. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Air conditioning not working
  • Air conditioning compressor does not turn on
  • The warning icon on the dashboard lights up

Causes

  • Short circuit in the sensor circuit
  • Refrigerant pressure sensor malfunction
  • Wiring harness damage
  • Problems with connectors or contacts

How to Fix

  1. Check the integrity of the wires and harness
  2. Diagnose the refrigerant pressure sensor
  3. Replace damaged wires or connectors
  4. Make sure the sensor is working properly and replace it if necessary.

Related codes

B14A3B14A5

FAQ

What does the B14A4 code mean?

B14A4 is an OBD-II diagnostic trouble code that indicates: Refrigerant Pressure Sensor Circuit Short Circuit

What causes a B14A4 error code?

The most common causes of B14A4 include: Short circuit in the sensor circuit; Refrigerant pressure sensor malfunction; Wiring harness damage; Problems with connectors or contacts.

How do I fix a B14A4 diagnostic trouble code?

To fix B14A4: Check the integrity of the wires and harness. Diagnose the refrigerant pressure sensor. Replace damaged wires or connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B14A4?

Limited driving only, diagnose soon

How much does it cost to fix B14A4?

The estimated repair cost for B14A4 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat