2018 RAM 2500 HD
Mileage
130,898
Service Date
5/8/2026
Services Performed
- CONFIRMED CHECK ENGINE LIGHT ON WITH STORED EVAP SYSTEM CODES P0456 (EVAP SMALL LEAK DETECTED) AND P0457 (EVAP SYSTEM LEAK DETECTED – FUEL CAP LOOSE/OFF). PERFORMED INITIAL EVAP SYSTEM INSPECTION INCLUDING GAS CAP VERIFICATION, HOSE INSPECTION, AND SMOKE TEST OF EVAP SYSTEM. DURING SMOKE TESTING, A SMALL LEAK CONDITION WAS OBSERVED WITH NO VISIBLE EXTERNAL HOSE DAMAGE OR DISCONNECTION FOUND. PERFORMED ACTIVATION AND COMMAND TESTING OF EVAP PURGE VALVE AND FOUND VALVE NOT PROPERLY SEALING WHEN DE-ACTIVATED, ALLOWING UNCONTROLLED VAPOR FLOW. THIS CONDITION INDICATES INTERNAL FAILURE OF PURGE VALVE. ADDITIONALLY, PERFORMED FUNCTION TESTING OF LEAK DETECTION PUMP (LDP) AND FOUND UNIT NOT HOLDING OR BUILDING PROPER VACUUM/PRESSURE DURING EVAP MONITOR TESTING. DATA SHOWED INCONSISTENT PRESSURE READINGS AND FAILURE TO COMPLETE EVAP SYSTEM SELF-TEST, INDICATING FAULTY LEAK DETECTION PUMP OPERATION. BASED ON TESTING AND OBSERVED RESULTS, THE EVAP SMALL LEAK CONDITION IS CAUSED BY A COMBINATION OF A DEFECTIVE PURGE VALVE AND A FAULTY LEAK DETECTION PUMP, RESULTING IN FAILURE OF THE EVAP SYSTEM TO PROPERLY SEAL AND PASS MONITORING TESTS. RECOMMEND REMOVE AND REPLACE PURGE VALVE AND LEAK DETECTION PUMP, FOLLOWED BY EVAP SYSTEM VERIFICATION TEST. – Customer acknowledged notice and gave oral approval of estimated repairs. REMOVE AND REPLACE EVAP PURGE VALVE IN ENGINE BAY AND LEAK DETECTION PUMP LOCATED UNDER VEHICLE NEAR CHARCOAL CANISTER. REMOVED FAULTY COMPONENTS, INSTALLED NEW PURGE VALVE AND LEAK DETECTION PUMP, AND VERIFIED ALL ELECTRICAL CONNECTIONS AND VACUUM LINES ARE SECURE AND PROPERLY ROUTED. CLEARED EVAP SYSTEM CODES AND PERFORMED FUNCTION TEST/VERIFICATION. SYSTEM OPERATING PROPERLY AT THIS TIME WITH NO LEAKS PRESENT.
TOM H. gave our service a 5 star review on 5/9/2026
