P1407 - Exhaust Gas Recirculation Flow Out Of Self-Test Range

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3  What does this mean?

P1407 Possible Causes

  • Faulty Exhaust Gas Recirculation (EGR) Valve
  • Exhaust Gas Recirculation (EGR) Valve Vacuum hose off or defective
  • Plugged Exhaust Gas Recirculation (EGR) Valve

First diagnose P1407 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the P1407 code

    Labor: 1.0

    The cost of diagnosing the P1407 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

P1407 Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1407 Meaning

The Exhaust Gas Recirculation (EGR) system recirculates a portion of the exhaust gasses into the intake manifold under average vehicle driving conditions to reduce combustion temperatures and exhaust gas NOx content. The amount of exhaust gas recirculated varies from zero with a cold engine to a fixed rate for a hot engine with intermediate load and low engine speed.

This test is performed during the Key On Engine Running (KOER) on demand self-test only. The EGR system is commanded ON at a fixed engine speed. The test fails and the Diagnostic Trouble Code (DTC) is output when the measured EGR flow falls above or below the required calibration.

OBDII Code P1407 - Exhaust Gas Recirculation Flow Out Of Self-Test Range - Engine-Codes.com

P1407 More Information

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P1407 Information for specific makes

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