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2020 HONDA ACCORD
1.5L I4 Turbo•FWD•CVT•gas•turbo
5 active safety recalls on this vehicle — view recalls
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Repairs402Labor502Torque3379Fluid7DTC1926Battery1Maintenance0Recalls5
P0470moderate severityPowertrain

Exhaust Pressure Sensor Malfunction

on 2020 Honda Accord 1.5L I4 Turbo · FWD

What this code means

The exhaust back pressure sensor is reading outside its expected range or has failed. This can affect EGR and turbo boost control on diesel and some gas engines.

Symptoms

  • Check engine light on
  • Reduced engine power
  • Poor fuel economy

Common causes

  • Faulty exhaust pressure sensor
  • Clogged or damaged sensor pressure tube
  • Wiring or connector corrosion
  • Failed PCM input circuit

Diagnostic steps

  1. Scan and confirm code with freeze frame data
  2. Inspect sensor and pressure tube for clogs or leaks
  3. Check wiring and connector for damage
  4. Compare sensor reading to known good values, replace if faulty
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