2nd Gen Sequoia: Check engine light with VSC and 4LO flashing, limp mode, codes P0418, P2440, P2442, P2445

Checks, in order

1. Codes
   P2440/P2442 are valves stuck open; P2445/P2447 are pumps stuck off; P0418/P0419 are the pump relay circuits. Valve-only codes may be fixable with the ECM reflash on 2014–2015 trucks.
   easy $ · under about $50
2. Inspect pumps and valves
   Rust dust or water at the pump inlets means they are finished. Replace valves and pumps together or the new pump dies the same way. Dealer repairs commonly run $2,000–4,500.
   medium $$$ · shop-level job, $500+
3. Bypass
   Bypass modules ($150–450) end the limp mode but disable an emissions device, which is illegal for road use under federal law and fails inspections where it is checked. Decide with your state's rules in mind.
   medium $$ · about $50 to $500

Applies to: 2nd generation Sequoia, 2008 to 2022, with the 5.7L 3UR-FE V8 (most trucks) and the 4.6L 1UR-FE (2010–2012). It shares its engines, brakes and steering with the 2nd gen Tundra, so the engine items here match that truck. Rear air suspension items apply to the Platinum trim.

Tools and parts for these checks

Links below are Amazon affiliate links: as an Amazon Associate, toyotadata earns from qualifying purchases, at no extra cost to you. Confirm fitment for your exact truck before you order.

The same problem on other Toyotas

• 2nd Gen Tundra (2007–2021): Check engine light, VSC and 4LO flashing, truck stuck in limp mode (P0418, P2440, P2442, P2445)

More 2nd Gen Sequoia problems

• Burning oil smell after driving, oil on the exhaust manifolds, no drip on the ground (Engine)
• Rear end sags, leans, or rides harsh; air compressor runs constantly or not at all (Platinum) (Steering & Suspension)
• Pink crust at the front of the engine or in the valley, coolant level dropping (Cooling)
• Rear liftgate window grinds, drops into the gate, or will not move (Body & Electrical)
• Brake booster pump buzzing, sinking pedal, ABS/VSC/BRAKE lights with C1252 or C1256 (Brakes)
• Turn the key: click or nothing, engine won't crank (Starting & Charging)

All 8 2nd Gen Sequoia symptoms in the interactive troubleshooter →

General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.