P0022 on 2018-2023 Kia Stinger 3.3L: Causes and Fixes for Over-Retarded Cam Timing

What's Unique About the 2018-2023 Kia Stinger

The Lambda II 3.3L Twin-Turbo V6 engine's CVVT system is highly dependent on clean oil and correct oil pressure to function. For this specific platform, a simple and highly effective diagnostic step is to swap the identical intake Oil Control Valves (OCVs) between the driver's side (Bank 2) and passenger's side (Bank 1). If the fault code changes to P0012 (the Bank 1 equivalent), it confirms the OCV is the problem. Additionally, a known oil leak from the Bank 2 turbo oil feed line, subject to recall SC300 (NHTSA 24V-169), can cause the low oil pressure that triggers this specific code. This issue is shared with its direct platform-mate, the Genesis G70 3.3T.

Symptoms You May Notice

• Check Engine Light is on
• Reduced engine power and sluggish acceleration
• Rough or uneven idle
• Poor fuel economy
• Engine may hesitate or stall in some cases
• Rattling or clicking noise from the engine on startup
• Engine knocking sounds

Most Likely Causes

1. Low, Dirty, or Incorrect Viscosity Engine Oil 🔴 High Probability The CVVT system uses hydraulic pressure to operate, and its small passages are easily clogged by sludge or debris from old oil. A recall (SC300) for a leaking Bank 2 turbo oil feed pipe can also cause a low oil condition, directly leading to low oil pressure and this code.
   How to confirm: Turn off the engine and wait 5-10 minutes. Check the oil level on the dipstick and observe its color and condition. If the level is low or the oil is very dark/sludgy, this is the likely cause. Also check for signs of an oil leak near the driver's side turbocharger.
   Typical fix: Perform a complete oil and filter change using a high-quality full synthetic 5W-30 oil and an OEM-spec filter. Ensure the oil level is filled to the 'F' mark. Have the SC300 recall performed by a Kia dealer to fix the potential oil leak.
   Est. part cost: $50-$100
2. Faulty Bank 2 Intake Oil Control Valve (OCV) / VVT Solenoid 🔴 High Probability → Shop Engine Variable Valve Timing (VVT) Solenoid The OCV is an electronic solenoid that can fail electrically or, more commonly, get stuck or clogged with oil sludge, preventing it from properly directing oil to the cam phaser. This is a very common failure point on the Lambda II 3.3T engine.
   How to confirm: Swap the Bank 2 (driver's side) intake OCV with the identical Bank 1 (passenger's side) intake OCV. Clear the codes and drive. If the fault code changes to P0012 (Bank 1), the OCV is confirmed to be faulty. Resistance can also be tested with a multimeter and should be between 6.9 and 7.9 ohms.
   Typical fix: Replace the faulty Oil Control Valve. The part is located on the front of the driver's side valve cover and is held by a single 10mm bolt.
   Est. part cost: $60-$120

Rare But Worth Checking

• Failing Camshaft Phaser (CVVT Actuator): → Shop Engine Camshaft If the oil is clean and swapping the OCVs doesn't change the code, the issue could be the mechanical phaser itself. This is often accompanied by a distinct rattling or ticking noise from the engine, especially on cold starts. This is a more complex and expensive repair.
• Stretched Timing Chain or Failed Tensioner: → Shop Engine Timing Chain While not common on this engine, which is considered robust, excessive slack in the timing chain can cause camshaft timing to be out of sync with the crankshaft, triggering this code. This is a major repair and usually presents with significant rattling noises.

Diagnosis Steps

1. Read the fault codes with an OBD-II scanner to confirm P0022 is the primary code.
2. Check Engine Oil Level and Condition: Turn off the engine, let the oil settle, and check the dipstick. If the oil is low, dirty, or past its service interval, perform an oil and filter change with the correct 5W-30 synthetic oil. Clear the code and see if it returns.
3. Inspect OCV Wiring: Check the electrical connector and wiring for the Bank 2 (driver's side) intake OCV for damage, corrosion, or oil saturation. A leaking valve cover gasket can sometimes contaminate the connector.
4. Perform OCV Swap Test: Unplug and remove the intake OCVs from both Bank 2 (driver's side) and Bank 1 (passenger's side). They are held by a single 10mm bolt each. Swap their positions, reinstall, clear codes, and drive the vehicle.
5. Re-scan for Codes: If the code has changed to P0012, the OCV originally from Bank 2 is faulty and needs replacement. If P0022 returns, the OCV is likely not the issue.
6. Check for Recalls: Verify if Kia Safety Recall SC300 (NHTSA 24V-169) for the left-hand turbo oil feed pipe has been performed on your vehicle. A leak here is a direct cause of oil pressure loss to Bank 2. Symptoms of this leak can include a burning smell or white smoke from the engine bay.
7. Further Mechanical Diagnosis: If the problem persists, the issue may be a clogged oil passage, a failing cam phaser, or a timing chain issue, which requires professional diagnosis.

Parts You'll Likely Need

• Engine Oil Control Valve / VVT Solenoid (Intake) (OEM #24355-3L100) — This is the most common component to fail or become clogged with sludge, causing the over-retarded timing condition for P0022. It is used for both intake banks.
  Trusted brands: Kia/Hyundai OE, Dorman, Standard Motor Products (SMP)
  OEM price range: $60-$90
  Aftermarket price range: $40-$70
• Engine Oil and Filter — Low or dirty oil is the number one cause of all VVT-related codes on this engine.
  Trusted brands: Kia/Hyundai OE Filter, Mobil 1, Pennzoil, Castrol
  OEM price range: $60-$100
  Aftermarket price range: $50-$80

Related Codes That Often Appear With This One

• P0012 — This is the equivalent code for Bank 1. It will appear after swapping a faulty Bank 2 OCV to the Bank 1 position during diagnosis, confirming the OCV is the culprit.
• P0524 — This code for 'Engine Oil Pressure Too Low' directly points to the root cause. If you see this with P0022, it confirms the issue is oil-related, possibly due to the leaking turbo oil feed line mentioned in recall SC300.

Technical Service Bulletins (TSBs) & Recalls

• SC300 / NHTSA 24V-169: Safety Recall for Left-Hand Turbocharger Oil Feed Pipe and Hose Assembly Replacement.

Platform-Specific Known Issues

• Safety Recall SC300 (NHTSA ID: 24V-169): Addresses a deteriorating left-hand (Bank 2) turbocharger oil feed pipe and hose assembly that can leak oil due to heat exposure. This leak can cause low oil pressure, a burning smell, white smoke, and trigger code P0022. The recall involves replacing the assembly with an improved part.

Mechanic-Grade Diagnostic Values

• Intake Oil Control Valve (OCV) Coil Resistance — expected: 6.9 - 7.9 Ohms at 68°F (20°C).. Failure: A reading of infinity (open circuit), near-zero (short circuit), or outside the specified range indicates a faulty solenoid coil.
• CVVT Camshaft Angle Correlation (Live Data) — expected: Less than 5 degrees of difference between 'Current Position of Intake Camshaft' and 'Control Camshaft Position Setpoint Intake'.. Failure: A consistent difference greater than 5 degrees while holding RPMs steady (e.g., at 2,500 RPM) indicates a performance issue with the CVVT system.
• OCV Connector Voltage (Key On, Engine Off) — expected: Approximately 12V (battery voltage) on one of the two pins.. Failure: No voltage suggests a problem with the power supply wiring or the ECU driver circuit.

Scan Tool Commands That Help

• Kia GDS (Global Diagnostic System): CVVT Actuation Test — To command the Bank 2 intake OCV solenoid on and off while monitoring the cam angle live data. This directly tests the solenoid's response and the hydraulic circuit without requiring physical removal or swapping of parts.
• Kia GDS (Global Diagnostic System): Reset Adaptive Values — After replacing an OCV or other timing component, this function should be used to clear the engine control module's learned values. This helps the system adapt to the new part more quickly and can prevent the code from returning immediately.

Wiring & Ground Locations

• Engine Ground Strap (91860-J5010) — The main ground strap connecting the engine block to the vehicle's chassis.. A poor or corroded main engine ground can cause unstable voltage and unpredictable behavior in all engine sensors and actuators, including the OCVs. While not a direct cause, verifying this ground is a crucial step when diagnosing any electronic fault.

Real Owner Repair Stories

• Reddit user on r/MechanicAdvice (Vehicle with VVT system (specific model not Stinger, but principle is identical)) — Check engine light with code P0022 came on shortly after an oil change at a dealership.
  ❌ Tried (didn't work) Initial panic and assumption of major engine damage.
  ✅ What actually fixed it The user checked the oil level and found it was extremely low. The dealership had not added enough oil. Topping off the oil to the correct level and clearing the code resolved the issue, confirming the P0022 was triggered by low oil pressure.

OEM Part Supersession History

• 24355-3L100 → 24355-3L100 — No supersession found. The part number appears to be consistent for the specified application.

Model Year Variations Within This Range

• 2022-2023: For the 2022 model year facelift, Kia introduced minor mechanical updates, including a revised turbo oil feed line (related to recall SC300 on earlier models) and a new variable exhaust system that slightly increased horsepower. While the fundamental cause of P0022 remains the same (oil or OCV), the factory-improved oil line on 2022+ models may make the recall-related cause less likely for those years.

Diagnostic Flowchart

Other Known Issues on This Vehicle

Issues unrelated to this code that are worth knowing about as an owner of this generation:

• Carbon Buildup on Intake Valves 🟠 Medium — Common on all GDI engines, typically becomes noticeable between 40,000 and 80,000 miles, causing rough idle and misfires. Requires professional walnut blast cleaning.
• High-Pressure Fuel Pump (HPFP) Failures 🔴 High — Subject of multiple recalls (e.g., NHTSA 23V-653) for some model years, can lead to sudden loss of power. (Ref: NHTSA 23V-653, SC198)
• Adaptive Transmission 'Learning' Behavior 🟡 Low — Common complaint where the transmission's adaptive learning causes jerky or delayed shifts. Not a mechanical failure but a drivability concern. Can be reset by the dealer.
• Interior Rattles 🟡 Low — Frequently reported by owners, especially from the trunk/hatch area. Typically requires DIY sound-deadening solutions.
• High Oil Consumption 🟠 Medium — Some owners of higher-mileage Lambda II engines report consuming oil at a rate of up to 1 quart per 1,000 miles.

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: For this repair, buying a used Oil Control Valve (OCV) is generally not recommended. The part is relatively inexpensive new (around $60-$90 OEM) and is a very common failure item due to internal sludge and wear. A used part carries a high risk of being similarly clogged or worn, leading to a repeat repair.

Donor-vehicle mileage cap: roughly under 40000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• If considering a used OCV, it must come from a documented low-mileage vehicle that was wrecked due to collision, not engine failure.
• Inspect the electrical connector for any signs of corrosion, brittleness, or physical damage.
• Check the small oil screen on the valve for any visible sludge, debris, or tearing.
• Test the resistance of the used OCV with a multimeter before installation to ensure it is within the 6.9-7.9 Ohm specification.

OEM-only on this vehicle (don't cheap out):

• Oil Control Valve (OCV): Due to the sensitivity of the CVVT system to oil flow and pressure, using a genuine Kia/Hyundai OEM part (24355-3L100) is strongly recommended to ensure correct operation and avoid premature failure.
• Engine Oil Filter: Always use an OEM or high-quality equivalent filter that meets Kia's specifications to ensure proper filtration and oil flow.

Brands owners have reported issues with on this vehicle:

• Unbranded/generic OCVs: Forum discussions and mechanic experience often warn against using cheap, no-name solenoids from online marketplaces, as they have a high failure rate and can cause performance issues shortly after installation.

Real Owner Stories

Aggregated from forums and TSBs cited above. Mileages and costs reflect what owners reported in those sources.

Related OBD-II Codes

• P0012 — This is the Bank 1 (passenger side) equivalent of P0022. If you swap OCVs and the code moves from P0022 to P0012, it confirms the solenoid is faulty.
• P0300 — Random or multiple cylinder misfires can occur as a result of the rough idle and engine hesitation caused by incorrect cam timing.
• SC300 — While a recall ID and not a DTC, this manufacturer campaign for the turbo oil feed pipe is the primary mechanical precursor to oil-pressure-related P0022 codes on this platform.
• SC198 — A recall related to the High-Pressure Fuel Pump (HPFP) which, like P0022, can cause a sudden loss of engine power.

Frequently Asked Questions