How to Replace the Fuel Cap on a 2012 Toyota Camry (Fix EVAP Leak & Check Engine Light)
Step-by-step fuel cap replacement with safety tips, required tools/parts, and what to expect after the repair for 1999, 2000, 2001
How to Replace the Fuel Cap on a 2012 Toyota Camry (Fix EVAP Leak & Check Engine Light)
Step-by-step fuel cap replacement with safety tips, required tools/parts, and what to expect after the repair for 1999, 2000, 2001
đź”§ Camry - Fuel Cap Replacement
Replacing the fuel cap is a quick job: you remove the old cap and install a new, correct-fit cap until it clicks. A damaged or wrong cap can cause fuel vapor leaks and may turn on the Check Engine Light (EVAP system leak).
Difficulty Level: Beginner | Estimated Time: 0.1-0.2 hours
⚠️ Safety & Precautions
- â›˝ Work in a well-ventilated area; fuel vapors are flammable.
- 🔥 No smoking, sparks, or open flames near the fuel door.
- đź§Ż Turn the car fully OFF (make sure the dash says OFF, not READY).
- 🧤 If fuel is present on the cap, avoid skin/eye contact; wipe spills immediately.
đź”§ Required Tools
You'll need the following tools for this repair:
- Nitrile gloves
- Clean shop towels
- Flashlight
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Fuel cap (OEM-style, tether-compatible) - Qty: 1
đź“‹ Before You Begin
- Park on level ground and set the parking brake.
- Turn the car OFF and remove the key fob from the cabin (keep it a few feet away).
- If you just drove, wait a minute so any tank pressure can stabilize.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Open the fuel door
- Use the flashlight if needed to see the lever area.
- Pull the fuel door release lever (near the driver’s seat) and open the fuel door by hand.
Step 2: Remove the old fuel cap
- Use nitrile gloves to keep fuel off your hands.
- Turn the cap counterclockwise until it comes off.
- If the cap is tethered, let it hang or place it in the holder on the fuel door (if equipped).
Step 3: Inspect the sealing area
- Use a clean shop towel to wipe the filler neck sealing surface (the smooth rim where the cap seals).
- Check that the old cap’s rubber seal (O-ring) isn’t stuck on the filler neck.
- Clean and dry seals help prevent EVAP leaks.
Step 4: Install the new fuel cap
- Thread the new cap on clockwise by hand.
- Tighten until you hear/feel it click (typically 1–3 clicks). Do not force it past normal clicking.
Step 5: Close the fuel door
- Close the fuel door firmly until it latches.
- Use the flashlight to confirm it’s fully closed and flush.
âś… After Repair
- Start the car and confirm there’s no fuel smell near the fuel door.
- If you had a Check Engine Light from a loose/bad cap, it may take a few normal drive cycles to turn off on its own.
- If the light stays on after several trips, you may need a code scan to confirm there isn’t another EVAP leak.
đź’° DIY vs Shop Cost
Shop Cost: $40-$120 (parts + labor)
DIY Cost: $15-$40 (parts only)
You Save: $25-$80 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.1-0.2 hours.
🎯 Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.
















