LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2003 >> Impala LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0403: EGR Solenoid Control Circuit >> Conditions For Setting DTC
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Conditions For Setting DTC

The PCM detects an electrical malfunction in the EGR solenoid high control circuit or the EGR solenoid low control circuit. The condition must be met for more than 20 seconds.