Kia Optima Hybrid: Evaporative Emission Control System / Canister Repair procedures

Removal
1.
Turn the ignition switch OFF and disconnect the auxiliary battery 12 (V) negative (-) terminal.
2.
Lift the vehicle.
3.
Remove the rear muffler hanger (A).

4.
Remove the rear suspension damper (A).

5.
Disconnect the vapor tube quick connectors (A) and ventilation hoses (B).

6.
Separate the canister from auxiliary canister by loosening the canister mounting bracket mounting bolts (A).
7.
Remove the canister bracket mounting bolts (B).
8.
Remove the canister protector (C).

9.
Remove the canister (A) by loosening the canister bracket mounting bolts (B).

10.
Remove the auxiliary canister (A) by removing the nuts (B) and disconnecting the ventilation hoses (C).

Inspection
1.
Check for the following items visually.
- Cracks or leakage of the canister
- Loose connection, distortion, or damage of the vapor hose/tube

A: Canister - Atmosphere
(NVLD module and Fuel Tank Air Filter)
B: Canister - Intake Manifold (PCSV)
C: Canister - Fuel Tank
Installation
Installation is the reverse of removal.

Canister installation bolt:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)
Canister poretector installation bolt:
8.8 ~ 13.7 N.m (0.9 ~ 1.4 kgf.m, 6.5 ~ 10.1 lb-ft)
Auxiliary canister installation bolt:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)

Repair procedures

Inspection When the engine is shut off, the pressure change in the fuel tank by the ambient temperature is monitored by NVLD and when the engine is started, ECM judges whether there is a leak or not through ...

Fuel Filler Cap Description and Operation

Description A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which seals the fuel filler. After the gasket on the fuel filler cap and the filler ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: ETC (Electronic Throttle Control) System Troubleshooting


Fail-Safe Mode ItemFail-SafeETC MotorThrottle valve stuck at 5°TPSTPS 1 faultReplace it with TPS 2TPS 2 faultReplace it with TPS 1TPS 1,2 faultThrottle valve stuck at 5°APSAPS 1 faultReplace it with APS 2APS 2 faultReplace it with APS 1APS 1,2 faultThrottle valve stuck at 5°     When throttle ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: ATF Warmer Repair procedures


Removal 1. Remove the under cover (A). Tightening torque : 7.8 ~ 11.8N.m (0.8 ~ 1.2kgf.m, 5.8 ~ 8.7 lb-ft) 2. Drain the coolant of engine & transaxle cooling system. (Refer to Engine Mechanical System - "Coolant") 3. Remove the drain plug (A) and reinstall the drain plug after draining ATF totally. ...

© 2025 Copyright www.koptimatfhev.com