OBD Guide

B0514

Output Air Temperature Sensor 4 Circuit

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

Symptoms

  • Check Engine light comes on
  • Possible reduction in engine power
  • Increased fuel consumption
  • Unstable engine operation at idle

Causes

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

How to Fix

  1. Check the integrity of the sensor circuit (resistance, short circuits)
  2. Check the sensor connector for corrosion or damage.
  3. Check the functionality of the sensor (compare readings with reference values)
  4. Replace sensor if necessary
  5. Check wiring harness for damage
  6. If necessary, reflash the ECU

Related codes

Error B0514 by Vehicle Brand