Two problems related to emission control have been reported for the 2002 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Ford Explorer based on all problems reported for the 2002 Explorer.
Egr sensor failure obd2 code p0401.
Check engine light illuminated at approximately 39000 miles. Diagnostic code p0174. No leaks present. Codes cleared. Check engine light recurred at 42000 miles. Diagnosed as failure of both exhaust gas oxygen sensor 063028 and sensor assy 021675. Ford motor refused reimbursement for defective parts.