fuel

Fuel Cap

for 2017 Toyota Corolla 1.8L I4 · FWD

Editorial review:Chris Hackleman — Master Technician · 20+ years · Jeff Moore — Master Mechanic · 20+ years

Difficulty

Easy

Time

6 min

Tools

Steps

✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman & Jeff Moore — 20+ years each). Always follow the vehicle's factory service information and torque specs.

This procedure covers the removal and replacement of the fuel filler cap on a 2014-2019 Toyota Corolla with 1.8L I4 engine.

Warnings

⚠Ensure replacement cap is designed for this vehicle to maintain proper EVAP system pressure and prevent check engine light codes

ℹ️The fuel cap is part of the emissions control system and must seal properly to prevent fuel vapors from escaping

Tools required

None required

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Parts

Fuel filler cap × 1 — Toyota OEM 77300-02181 or equivalent

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Preparation

Park vehicle on level ground and turn off engine
Allow fuel system to normalize to atmospheric pressure if vehicle was recently driven
Verify replacement fuel cap is correct part number for 2014-2019 Corolla

Procedure

1
Locate fuel filler door
The fuel filler door is located on the left rear quarter panel of the vehicle. Press the left side of the door to release the latch and open it fully.
2
Remove old fuel cap
Rotate the fuel cap counterclockwise until it releases from the filler neck. The cap will click several times as you turn it. Continue turning until the cap is free from the threads and can be pulled away from the filler neck.
3
Inspect filler neck seal
Examine the rubber seal on the fuel filler neck for any debris, damage, or contamination. Wipe clean with a lint-free cloth if necessary. Check that the seal is intact and seated properly in its groove.
4
Install new fuel cap
Align the new fuel cap with the filler neck threads and rotate clockwise. Continue turning until you hear at least 3 distinct clicks, which indicates the cap is properly tightened and sealed. Do not overtighten beyond the clicking point.
5
Close fuel filler door
Push the fuel filler door closed until it latches securely. The door should sit flush with the body panel.

Reassembly

No reassembly required for this procedure

Verification

Verify fuel cap clicks at least 3 times when tightened to confirm proper seal
Check that fuel filler door closes and latches properly
Start vehicle and confirm no check engine light appears related to EVAP system (P0455, P0456, or P0457 codes)
Inspect cap tether is properly attached and not damaged

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