Parts for your 2014 Holden Barina-Fuel cap

2014 Holden Barina fuel-cap — purpose, care and replacement

Yes, the 2014 Holden Barina (TM series) is designed to use a conventional, tethered, screw-on fuel cap. This is documented in the Holden Barina TM Owner’s Manual (Fuel and Refuelling section) and the GM Service Information for the Sonic/Barina TM platform, which both describe removing/refitting the cap and the role it plays in sealing the vehicle’s EVAP emissions system. GM/ACDelco parts catalogues also list a dedicated petrol filler cap for the TM Barina, confirming fitment on this model.

On a 2014 Barina, the fuel cap does a lot more than just keep the petrol in. It seals the filler neck to prevent fuel vapour escaping, keeps water and road grit out of the tank, and lets the EVAP system manage pressure and vapour recovery properly. When that seal is right, the car runs cleaner, the environment wins, and there’s less chance of a pesky check engine light from small vapour leaks.

As part of routine servicing, the fuel cap deserves a quick once-over. They’re simple, but the rubber seal can harden or crack with age, and the internal pressure/vacuum valves can wear. A Barina that’s showing a fuel smell around the rear quarter, struggling to make the familiar “clicks” when tightening, or throwing EVAP leak codes (like P0442 or P0457) is often telling the driver the cap needs attention.

Replacement is straightforward. Always choose an OEM-spec cap that suits the TM Barina’s EVAP calibration—generic “vented” or marine-style caps aren’t right for this car. Check the tether length and fit so the cap stores neatly without straining the hinge on the fuel flap. When fitting, turn until it clicks two to three times, that sound indicates the seal is properly compressed. If the cap won’t click or the O-ring looks flattened, perished, or nicked, it’s time to replace it.

For care, wipe the sealing surface of the filler neck and the cap’s O-ring with a clean, damp cloth during services (every 10,000–15,000 km is a good habit). Avoid petroleum-based lubricants on the seal, if it’s dry, a very light touch of silicone-rubber-safe protectant can help, but any seal that’s cracked should be replaced. On the Barina, the fuel flap is a simple push-to-open design when the car is unlocked, making access easy at the servo.

A healthy fuel cap helps the Barina stay efficient, odour-free, and error-light-free—small part, big job.

Popular questions about 2014 Holden Barina fuel caps

How do you open the 2014 Barina’s fuel flap and cap?
The flap pops open with a press when the car is unlocked. Twist the tethered cap anti-clockwise to remove, and refit by turning clockwise until it clicks two to three times.

Will a loose or faulty cap trigger a check engine light?
It often can. The Barina’s EVAP system monitors for vapour leaks, a loose, damaged, or incorrect cap may set small-leak codes and switch on the engine light. Tighten until it clicks or replace the cap if the seal looks tired.

Which fuel should the Barina use, and does the cap type matter?
It runs happily on 91 RON unleaded (E10 compatible). The cap does matter—use an OEM-spec cap designed for the TM Barina so the EVAP system seals and vents correctly.