OBD-II Code
P1455
Severity
Not yet reviewed
Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.
Can you drive it
We cannot say
Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.
Indicative cost (USD)
$20–$650
From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
$20 (gas cap or single hose) to $650 (full pump module plus canister).
P1455 on a Toyota is the EVAP Control System major-leak code reported by the EVAP pump module (the leak-detection pump that lives on the charcoal canister assembly under the spare tire on Sequoia/Tundra/4Runner or on the rear frame rail on Camry/Highlander).
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then follow the diagnostic notes further down this page, in the order they are written.
They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
Read the full diagnostic procedureP1455 on a Toyota is the EVAP Control System major-leak code reported by the EVAP pump module (the leak-detection pump that lives on the charcoal can…
P1455 on a Toyota is the EVAP Control System major-leak code reported by the EVAP pump module (the leak-detection pump that lives on the charcoal canister assembly under the spare tire on Sequoia/Tundra/4Runner or on the rear frame rail on Camry/Highlander). The pump pressurizes the entire EVAP system to a target vacuum/pressure and watches current draw and decay time — a healthy pump draws 0.5-2A during the seal test and holds pressure for 30+ seconds; a system with a major leak (gas cap loose, hose disconnected, canister cracked) drops pressure immediately and the pump runs continuously trying to maintain it.
The cheapest-first ladder
- tighten the gas cap and drive 2-3 drive cycles to see if it self-clears (Toyota requires multiple cold-start cycles before EVAP monitors re-run).
- Then visually inspect every EVAP hose from the tank forward — the rubber hose between the canister and the purge VSV is the most common failure on Tundra/Sequoia, cracking from heat-soak above the exhaust crossover.
- Next, smoke-test the EVAP system through the service port (usually a green Schrader valve near the canister) — fog escapes the leak.
- Finally, pull the pump module connector and check pump current at startup with an amp clamp.
- Don't replace the EVAP pump module before smoke-testing — the module is $350-600 and most P1455 codes are a $5 hose or a $20 gas cap, with the pump only being the actual failure on roughly 20% of the cases that walk through the door.
Vehicle-specific patterns2007-2014 Tundra 5.7L (3UR-FE) and Sequoia commonly throw P1455 from cracked EVAP hoses above the rear axle where road heat and exhaust heat both coo…
- 2007-2014Tundra 5.7L (3UR-FE) and Sequoia commonly throw P1455 from cracked EVAP hoses above the rear axle where road heat and exhaust heat both cook the rubber — a $15 fuel-rated hose section and two clamps clears it.
- 2005-2015Tacoma 2.7L/4.0L throws P1455 from the canister assembly cracking after rock impacts (it sits exposed near the rear frame rail) — the canister-pump unit is $280-400.
- 2007-2017Camry 2.5L (2AR-FE) and 3.5L (2GR-FE) throws P1455 from the purge VSV (vacuum switching valve) sticking open and from a failed fuel-tank vent valve at the filler neck.
- 2004-2009Prius Gen2 (1NZ-FXE) throws P1455 from the sealed EVAP system's bladder failing internally — Toyota issued a TSB for affected VINs and many got a full canister replacement under warranty extension. Lexus RX330/RX350 mirrors the Highlander pattern.
Estimated repair$20 (gas cap or single hose) to $650 (full pump module plus canister).
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