A variable valve timing (VVT) solenoid controls the oil that moves a camshaft timing actuator. On the 2012–2017 Hyundai Veloster with the naturally aspirated 1.6L GDI engine, a faulty oil control valve can contribute to uneven idle, poor response or a check-engine light. Hyundai identifies P0075 as an intake valve-control solenoid circuit fault for Bank 1, while P0078 concerns the exhaust valve-control solenoid circuit. A circuit code can come from the connector or wiring as well as the valve.
The featured replacement is one valve suitable for the listed intake or exhaust application. The engine has separate control positions, so identify the affected side before disconnecting anything. This guide covers the external oil-control-valve replacement on the first-generation, non-turbo 1.6L GDI Veloster. Turbo and later-generation models need their own access and service checks even where a parts catalog lists the same reference.
Intermediate: diagnosis, clean handling and small-fastener torque
Estimate: 45–90 minutes for one accessible valve after diagnosis; allow more for a second valve or damaged wiring
Estimate: $25–$65 for one aftermarket valve and sealing supplies; two valves and diagnostic labor cost extra
Featured product and quantity
A-Premium APTCV061, ASIN B09Q8V9M8K, is a single two-pin electromagnetic oil-control solenoid. The listing cross-references 24355-2B700 and 918-024 and identifies intake or exhaust use on the listed 1.6L applications. “Intake or exhaust” describes the applicable positions; it does not mean the box contains a pair.
The Hyundai parts catalog lists a vehicle quantity of two for the corresponding Veloster oil-control-valve reference. That is the number used by the vehicle, not the quantity in this Amazon package. Order two single units only if diagnosis and your repair plan call for both. A fault on one side does not automatically justify replacing the other.
Compare the original reference, connector keying, mounting ear, oil-port arrangement and seal position. Check whether the delivered valve includes the correct undamaged O-ring and obtain a suitable replacement seal if necessary. Do not assume the package includes a separate harness repair connector, cam phaser or any timing-chain components.
Check the single intake-or-exhaust VVT solenoid
Vehicle compatibility
| Application | Verified listing range | How to use this information |
|---|---|---|
| Hyundai Veloster 1.6L | 2012–2017; the retail listing also names 2019–2021 | This procedure is limited to the 2012–2017 naturally aspirated GDI application. Verify turbo and later-generation procedures separately; no 2018 year is inferred. |
| Hyundai Accent 1.6L | 2012–2019 | Catalog application only; use Accent service instructions and VIN confirmation. |
| Hyundai Elantra / Elantra GT 1.6L | Elantra 2017–2020; Elantra GT 2018–2020 | Do not confuse these 1.6L applications with 1.8L or 2.0L valves. |
| Other Hyundai and Kia models in the exact listing | Selected 1.6L Sonata, Tucson, Kona, Forte, Rio, Optima, Seltos and Soul variants | Model name alone is insufficient. Confirm year, engine, production details and reference in the current seller/manufacturer catalog. |
The repair instructions are intentionally tied to the first-generation non-turbo Veloster. The body style, engine size or connector count alone cannot establish interchangeability. Check the VIN and existing valve before purchase, particularly if the engine has been replaced or the car has an uncertain service history. Do not use a broad retail fitment list as a substitute for another vehicle’s installation procedure.
Diagnosis before buying a valve
Check basic oil supply and record the complaint
Save codes, pending faults and freeze-frame data before clearing them or disconnecting the battery. Note whether the fault occurs at cold start, after warm-up or during acceleration. Check oil level using the owner’s procedure and review the oil-change history. The CVVT system relies on engine oil to move the cam phaser, so poor oil condition or inadequate supply can affect operation without an electrical failure.
Correct a low oil level with the specified oil and investigate repeated loss. Do not run the engine with an oil-pressure warning that remains on, heavy mechanical noise or a major leak. A new valve cannot repair worn timing components, restore missing oil pressure or remove contamination from an entire engine. Uneven running can also have ignition, fueling or air-leak causes.
Separate circuit faults from hydraulic faults
P0075 points to the intake-control circuit and P0078 to the exhaust-control circuit. Inspect the appropriate connector with ignition off. Look for a broken lock, loose or corroded terminals, oil intrusion, chafed insulation and wiring strained by previous work. Repair a damaged circuit before assuming the valve is responsible. A fault that appears after another repair may be caused by a connector left loose.
The Veloster service specification is 6.9–7.9 ohms at 20°C / 68°F across the disconnected OCV’s two terminals. Measure with power removed and compensate for test-lead resistance. Temperature matters, so a hot-engine reading should not be compared casually with a room-temperature specification. Use appropriate probes that will not spread the terminals.
A coil outside specification supports further valve diagnosis; a coil inside specification does not prove free spool movement or adequate oil flow. Comparing commanded and actual cam timing may require Hyundai-capable diagnostic equipment. The basic reader below collects codes and supported data but cannot perform a manufacturer-specific actuator test. Do not apply battery power to the harness or guess a bench-test pinout.
Tools and supplies
Use a hand ratchet and a torque wrench capable of accurately tightening the small retaining bolt. This valve-only engine-bay procedure does not require a jack, stands or an oil-drain service. Match sockets to the actual fasteners rather than assuming a size from an online photograph.
| Tool or Supply | Exact Product | Product Link | Purpose and Selection Check |
|---|---|---|---|
| Metric sockets and ratchets | DEWALT DWMT73803, 168-piece mechanic’s set | View metric sockets and ratchets | 1/4- and 3/8-inch drives. Match each actual fastener; socket sizes are not inferred from thread diameter. |
| Low-range torque wrench | EPAuto 1/4-inch, 20–200 in-lb (2.26–22.6 N·m) | View low-range torque wrench | For verified small-fastener specifications within its range; confirm socket drive and use the correct units. |
| Basic OBD-II reader | Autel AL319 | View basic obd-ii reader | Reads codes, freeze-frame and supported data; does not provide manufacturer-specific bidirectional actuator tests. |
| Digital multimeter | INNOVA 3320 | View digital multimeter | Voltage and resistance diagnosis following the circuit procedure; disconnect power before resistance tests. |
| Eye protection | DEWALT DPG82-11 clear goggles, one pair | View eye protection | Protect eyes from loose debris; choose additional chemical protection appropriate to the fluid being handled. |
| Valve sealing parts | Correct oil-control-valve O-ring for the VIN and replacement assembly | Select by vehicle specification | Inspect the supplied seal; do not install a cut, hardened or incorrect ring. Confirm dimensions and oil compatibility before substituting a separate seal. |
| Seal lubricant and top-up oil | Clean engine oil meeting the vehicle’s specified grade and standard | Select by vehicle specification | Use a light film on the O-ring. Top up only if needed after checking the oil level. |
| Clean handling and spill control | Low-shedding cloths, suitable oil-resistant gloves and a small catch container | Select by vehicle specification | Clean the exterior first, catch residual oil and keep fibers, grit and cleaning fluid out of the cylinder-head opening. |
DIY or professional repair?
This can be a manageable DIY replacement once testing identifies a failed valve and the engine configuration matches the guide. It requires more care than simply changing a plug-in sensor because the valve opens an engine-oil passage. A clean work area, sound connectors and a correctly ranged torque wrench are important.
Choose professional diagnosis when faults return after oil and circuit checks, when the valve is stuck, or when camshaft timing and oil-pressure problems are suspected. For planning, a straightforward professional diagnosis and one-valve replacement may involve roughly $120–$300 in labor, plus parts and any additional testing. That is a variable budgeting estimate, not a current quote. Replacing both valves or repairing a harness can change the cost.
Step-by-step replacement
1. Confirm intake or exhaust position
Verify the naturally aspirated 1.6L GDI application and identify the affected valve using the service layout and diagnostic result. Mark the original connector and photograph its routing. Do not decide intake versus exhaust from left/right wording in an unrelated video. The same replacement reference does not make the two control circuits interchangeable.
2. Shut down and protect the work area
Allow the engine to cool, switch the ignition off and keep the key away from the car. Save information that may be lost during battery disconnection, then disconnect and isolate the negative cable. Remove only the access trim required on the actual vehicle, using its proper attachment method. Do not loosen fuel pipes or pull on nearby sensor wiring to create space.
3. Clean, unplug and remove
Clean around the valve before opening the cylinder head and place a small container or absorbent material to catch residual oil. Release the connector lock and pull the housing straight away without tugging the wires. Remove the mounting bolt with a correctly fitting hand socket and keep it secure. Withdraw the valve carefully along the bore; avoid prying on the head or twisting the electrical connector as a handle.
Stop if the valve requires excessive force. Inspect the removed seal and confirm that no piece remains in the opening. Protect the opening while comparing the new part. Do not push cloth into an oil passage or scrape debris inward. If substantial metal or heavy contamination is present, investigate the engine’s condition before continuing with a routine part swap.
4. Prepare and seat the replacement
Compare the new valve’s physical features with the original and check for shipping or impact damage. A dropped solenoid can have internal damage even if the outside looks acceptable. Make sure the correct O-ring is in good condition and seated properly. Apply a thin film of clean engine oil to the ring, then guide the valve into its bore without pinching the seal. Do not add RTV or thread tape.
5. Tighten the mounting bolt
The mounting ear should reach its seat without being pulled in by the bolt. Start the fastener by hand, then tighten it to 9.8–11.8 N·m (7.2–8.7 lb-ft). This is approximately 87–104 lb-in, within the linked low-range torque wrench’s capacity. Confirm the wrench units before applying force. An impact driver or a large wheel-lug torque wrench is unsuitable for this small fastening operation.
Reconnect the correct electrical plug until the lock engages and check its retention with a gentle pull on the housing. Restore harness routing and clips. If replacing a second diagnosed valve, repeat the work one position at a time, keeping both connectors identified and both openings protected from contamination.
6. Restore power and inspect
Remove protective covers, restore access trim and account for tools. Reconnect the negative battery cable using the vehicle’s battery service procedure. Check the oil level and correct it only as needed. Start the engine in a ventilated area and inspect around the valve from a safe position. Switch off for leakage, abnormal noise or an oil-pressure warning; do not reach near moving belts or fans.
7. Confirm the original fault is resolved
After warm-up, recheck for oil leaks and scan for pending and stored faults. Clear codes only after retaining the diagnostic record and correcting the cause. Carry out a safe road check that reflects the original complaint, then inspect again. Readiness monitors may need their normal drive conditions to complete after codes are cleared.
If the same fault returns, use the corresponding circuit or timing-system diagnostic chart. Check the connector again, but do not assume another new valve is the next step. Persistent faults can involve wiring, oil supply or mechanical cam timing. A warning light that stays off for a few minutes does not establish a lasting repair.
Common mistakes to avoid
- Buying one unit while planning to replace two valves.
- Confusing a catalog vehicle quantity with the package quantity.
- Crossing intake and exhaust connectors after working on both positions.
- Installing a dry, damaged or incorrectly sized O-ring.
- Applying inch-pound numbers as foot-pounds or over-tightening a misaligned valve.
- Ignoring low oil pressure, contamination or mechanical timing symptoms.
- Using the same access instructions for a turbo or later-generation car without checking its service information.
Frequently asked questions
Does intake-or-exhaust mean one valve controls both cams?
No. The part can serve either listed position, but each installed valve controls its own oil circuit. This package contains one unit. The engine’s use of two valves does not mean a pair is supplied.
Should both valves be replaced together?
Only if diagnosis supports that choice or there is a specific reason to renew both. Inspect the oil and shared operating conditions if both sides have problems. Replacing good parts will not fix a common oil-supply issue.
Is an oil change part of the replacement?
The valve-only procedure does not require draining the sump. Oil condition still matters: service overdue or unsuitable oil separately and check the level afterward. An oil change alone does not prove that a timing fault has been repaired.
Is the torque the same as a camshaft actuator bolt?
No. The specification here belongs to the external solenoid’s small installation bolt. Camshaft actuator, timing-chain and cylinder-head fasteners have separate procedures and must never be tightened using this value.
Technical sources
- Exact selected listing: APTCV061, one unit and 1.6L applications
- A-Premium catalog: APTCV061 reference and compatibility
- Hyundai catalog: 24355-2B700 and vehicle quantity
- Veloster service information: removal, seal lubrication and retaining-bolt torque
- Veloster service specifications: OCV coil resistance
- Veloster service information: CVVT operation
- 2012 Veloster 1.6L: P0075 circuit diagnosis
- 2017 Veloster 1.6L GDI: P0078 component inspection