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2015 KIA FORTE
1.8L I4•FWD•AUTOMATIC•gas•G4NB
1 active safety recall on this vehicle — view recalls🏆Sponsored by Simon-Olivier Ricci
Repairs401Labor494Torque3387Fluid7DTC1531Battery1Maintenance0Recalls1
P0407moderate severityPowertrain

Exhaust Gas Recirculation Sensor B Circuit Low

on 2015 Kia Forte 1.8L I4 · FWD

What this code means

The PCM detects a low voltage signal from EGR sensor B. This can reduce EGR control accuracy and increase emissions.

Symptoms

  • Check engine light on
  • Rough idle
  • Increased NOx emissions

Common causes

  • Faulty EGR position sensor B
  • Short to ground in wiring
  • Corroded connector
  • Failed PCM input circuit

Diagnostic steps

  1. Scan and record freeze frame
  2. Backprobe EGR sensor B signal voltage
  3. Inspect wiring for short to ground
  4. Replace EGR sensor or repair harness
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