P1408: EGR Flow Out Of Self Test Range

MediumPowertrainEGR System

What does P1408 mean?

P1408 is a diagnostic trouble code indicating "EGR Flow Out Of Self Test Range". This code relates to your vehicle's egr system and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.

Common causes

  • Faulty egr system component
  • Wiring or connector issue in the related circuit
  • Failed sensor providing incorrect readings
  • Software/calibration issue requiring ECU update
  • Related component causing secondary fault

What should you do?

Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.

Get a diagnosis for YOUR car

Code P1408 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.

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Related codes

P1407EGR No Flow Detected
P1406Exhaust Gas Recirculation (EGR) Position Sensor Performance
P1404IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance
P1402EGR Metering Orifice Restricted