OBD Guide

B3578

Output Air Temperature Sensor 6 Circuit

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