OBD Guide
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B14A5

Refrigerant Flow Sensor Circuit Open

B14A5 is an OBD-II diagnostic trouble code meaning: Refrigerant Flow Sensor Circuit Open. Common causes: broken or damaged wiring harness, refrigerant flow sensor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Air conditioner doesn't work
  • Reduced cooling efficiency
  • Check Engine light comes on

Causes

  • Broken or damaged wiring harness
  • Refrigerant flow sensor malfunction
  • Poor contact in the sensor connector
  • Short circuit in the circuit

How to Fix

  1. Check the integrity of the wiring harness
  2. Check sensor connections
  3. Replace the refrigerant flow sensor if necessary
  4. Clear error codes and check the system

Related codes

B14A4B14A6

FAQ

What does the B14A5 code mean?

B14A5 is an OBD-II diagnostic trouble code that indicates: Refrigerant Flow Sensor Circuit Open

What causes a B14A5 error code?

The most common causes of B14A5 include: Broken or damaged wiring harness; Refrigerant flow sensor malfunction; Poor contact in the sensor connector; Short circuit in the circuit.

How do I fix a B14A5 diagnostic trouble code?

To fix B14A5: Check the integrity of the wiring harness. Check sensor connections. Replace the refrigerant flow sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B14A5?

Limited driving only, diagnose soon

How much does it cost to fix B14A5?

The estimated repair cost for B14A5 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat