Hyundai Sonata: Evaporative Emission Control System / Fuel Tank Air Filter Repair procedures

Replacement
1.
Turn the ignition switch OFF and disconnect the negative (-) battery cable.
2.
Lift the vehicle.
3.
Remove the rear-left wheel & tire and house cover.
4.
Disconnect the canister close valve connector (A).
5.
Disconnect the vapor hose (B).
6.
Remove installation bolts (A) and then remove the fuel tank air filter.

7.
Release the lever (A), and then separate the canister close valve (B) from the fuel tank air filter (C) after rotating it in the direction of the arrow in the figure.

8.
Install a new fuel tank air filter.
Fuel Filler Cap Description and Operation
Description A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which would seal the fuel filler. After the gasket on the fuel filler cap ...

Exhaust Emission Control System
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Other information:

Hyundai Sonata LF 2014-2019 Service Manual: External AMP Repair procedures
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Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Inspection Check it by the procedure below to see if the function of the ECM is normal. 1. Turn the ignition key to the "ON" position. 2. Cover the forward facing sensor. 3. Head a light to the rearward looking sensor. 4. The ECM should be darkened as soon as the rearward looking se ...

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