OBD Guide

B3578

Output Air Temperature Sensor 6 Circuit

B3578 is an OBD-II diagnostic trouble code meaning: Output Air Temperature Sensor 6 Circuit. Common causes: open or short circuit in the sensor circuit, outlet air temperature sensor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect air temperature readings
  • Increased fuel consumption
  • Reduced engine power
  • Check engine light comes on

Causes

  • Open or short circuit in the sensor circuit
  • Outlet air temperature sensor malfunction
  • Wiring harness damage
  • Poor contact in the sensor connector

How to Fix

  1. Check the integrity of the sensor circuit
  2. Check sensor resistance and voltage
  3. Inspect the wiring harness for damage
  4. Replace the outlet air temperature sensor if necessary

Related codes

Error B3578 by Vehicle Brand

FAQ

What does the B3578 code mean?

B3578 is an OBD-II diagnostic trouble code that indicates: Output Air Temperature Sensor 6 Circuit

What causes a B3578 error code?

The most common causes of B3578 include: Open or short circuit in the sensor circuit; Outlet air temperature sensor malfunction; Wiring harness damage; Poor contact in the sensor connector.

How do I fix a B3578 diagnostic trouble code?

To fix B3578: Check the integrity of the sensor circuit. Check sensor resistance and voltage. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3578?

Limited driving only, diagnose soon

How much does it cost to fix B3578?

The estimated repair cost for B3578 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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