DTC P0403: Exhaust Gas Recirculation (EGR) Solenoid Control Circuit: Troubleshooting

WARNING: This page is about a different car, the 2006 Suzuki Reno and 2006 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.

TROUBLESHOOTING CHART

Step	Action	Value(s)	Yes	No
1	Perform an On-Board Diagnostic (OBD II) System Check. Is the system check complete?	-	Go to Step 2	Go to On-Board Diagnostic (OBD II) System Check
2	Turn the ignition switch to LOCK. Disconnect the EGR solenoid connector. Check for an open or short in the wire between the EGR connector terminal 5 and the main relay terminal 87. Check for an open or short in the wire between the EGR connector terminal 1 and the ECM connector terminal E53. Is the problem found?	-	Go to Step 3	Go to Step 4
3	Repair the wire or the connector terminals as needed. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs). Perform an On-Board Diagnostic (OBD II) System Check. Is the repair complete?	-	System OK	-
4	Connect the EGR solenoid connector. Turn the ignition switch ON. Using the Digital Voltmeter (DVM), measure the voltage between the EGR connector terminal 1 and the battery positive. Is the voltage reading between the specified values?	12 - 13 V	Go to Step 6	Go to Step 5
5	Replace the EGR valve. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs). Perform an On-Board Diagnostic System Check. Is the repair complete?	-	System OK	-
6	Replace the ECM. Perform an On-Board Diagnostic System Check. Is the repair complete?	-	System OK	-