The Check Engine Light may illuminate due to a defective charcoal canister vent control valve. The charcoal canister is a component in the Evaporative emissions (EVAP) system. Our technicians tell us a failed vent valve will require replacement.
2003 Nissan Pathfinder Problem Reports
RepairPal Verified 2003 Nissan Pathfinder Problem Reports
Screws inside the intake manifold can become loose causing internal engine damage if they fall out completely. Our technicians report that using a strong thread locker on the power valve butterfly screws can help prevent them from becoming loose. The manual transmission models reportedly do not have the intake manifold power valves.