TorqueMech Beta
TorqueMech OBD Code Guide

P0403 - Exhaust Gas Recirculation Circuit Malfunction

EGR control circuit fault detected.

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Code Meaning

EGR control circuit fault detected.

Common Causes

Wiring/connectors issue
EGR solenoid failure
ECM driver issue (rare)

Quick Checks

  • Inspect wiring/connectors
  • Check solenoid resistance
  • Check power/ground at solenoid

Likely Repairs

Use test results to confirm the fault before pricing the repair.

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Related Codes

P0401
Exhaust Gas Recirculation Flow Insufficient Detected
Open ->
P0402
Exhaust Gas Recirculation Flow Excessive Detected
Open ->

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.

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