P0022 on 2007-2009 Kia Sorento 3.8L V6: Causes and Fixes for Over-Retarded Cam Timing

What's Unique About the 2007-2009 Kia Sorento

The 3.8L Lambda V6 engine (G6DA) in this generation of Sorento is known for being sensitive to oil quality and maintenance schedules. The VVT system is hydraulically operated, and issues with sludge buildup from infrequent oil changes are a primary contributor to this code. Unlike some other manufacturers where cam phasers are the most common failure point, on this Kia engine, the much cheaper and easier-to-replace Oil Control Valve (OCV) is a more frequent cause of P0022. This issue is widespread across many Hyundai and Kia models that used the 3.3L and 3.8L Lambda engines.

Symptoms You May Notice

• Check Engine Light is on
• Rough or unstable idle
• Engine hesitation or stumbling on acceleration
• Reduced engine power
• Poor fuel economy
• Engine stalling, especially at low speeds or when coming to a stop.
• Rattling or ticking noise from the engine on startup (less common, points to phaser issues).

Most Likely Causes

1. Low, Dirty, or Incorrect Viscosity Engine Oil 🔴 High Probability The Lambda V6's VVT system uses hydraulic pressure to operate. Sludge from old oil or the wrong viscosity oil can clog the small passages in the Oil Control Valve and cam phaser, preventing proper operation. This is cited as the cause for over 50% of P0022 codes across all makes.
   How to confirm: Check the engine oil dipstick. The oil should be at the full mark and have a clear, amber color. If it is black, thick, or below the 'add' line, this is the likely cause.
   Typical fix: Perform a complete engine oil and filter change using a quality filter and the manufacturer-recommended 5W-20 or 5W-30 oil. Many owners report this simple maintenance step resolves the code.
   Est. part cost: $30-$70
2. Faulty Bank 2 Intake Oil Control Valve (OCV) 🔴 High Probability This solenoid is the most common hardware failure for P0022 on this engine. Its internal passages and filter screen can become clogged with sludge, or the solenoid can fail electrically, preventing it from directing oil to the cam phaser.
   How to confirm: After an oil change, if the code persists, swap the Bank 2 intake OCV with the Bank 1 intake OCV (located on the rear bank). Clear the codes and drive. If the code changes to P0012 (Bank 1 over-retarded), the OCV is faulty. You can also test the solenoid's resistance; it should be between 6.9 and 7.9 ohms for the Delphi-made OCVs used in this engine.
   Typical fix: Replace the Bank 2 (front, driver's side) intake Oil Control Valve. Lubricate the O-rings on the new valve with clean engine oil before installation.
   Est. part cost: $50-$100
3. Failing Intake Camshaft Phaser (CVVT Actuator) ⚪ Low Probability The phaser is a mechanical gear that can get stuck due to internal wear or oil contamination. While less common than an OCV failure, it's the next logical step if a new OCV and clean oil don't solve the problem.
   How to confirm: This is difficult to confirm without significant disassembly. A persistent, diesel-like rattling noise from the timing cover area on cold starts 🎬 See this guide on symptoms and costs for bad cam phasers. is a strong indicator. Diagnosis typically involves ruling out the OCV and oil issues first.
   Typical fix: Replace the Bank 2 intake camshaft phaser. This is a labor-intensive job that requires removing the timing cover and re-timing the engine.
   Est. part cost: $150-$250

Rare But Worth Checking

• Stretched Timing Chain or Failed Tensioner: While not common, a timing chain that has stretched or a tensioner that has lost its hydraulic pressure can cause the camshaft timing to be physically retarded. This is usually accompanied by rattling noises from the timing cover area and is a major repair. This is a more common issue on the GM 3.6L V6 but can happen on any chain-driven engine with high mileage.
• Damaged Crankshaft Reluctor Wheel: In rare cases, the reluctor wheel on the crankshaft can be damaged or shift, causing the crankshaft position sensor to send incorrect data. This can lead to a correlation code like P0022. This issue is more documented on certain GM vehicles but is a possibility.

Diagnosis Steps

1. Check Engine Oil: Verify the oil level is full and the oil is clean. If low or dirty, perform an oil and filter change with the correct viscosity oil (5W-20 or 5W-30). Use a quality OEM or equivalent oil filter, as restrictive aftermarket filters can cause oil pressure issues. Clear the code and test drive.
2. Inspect OCV Wiring: Check the wiring harness and connector for the Bank 2 intake OCV for any signs of damage, corrosion, or loose connections. The connectors for left and right banks are often color-coded to prevent being swapped.
3. Test the OCV: The easiest test is to swap the Bank 2 intake OCV (front bank) with the Bank 1 intake OCV (rear bank). Clear codes and drive. If the fault moves to Bank 1 (code P0012), the OCV is bad. Alternatively, remove the OCV and apply a 12V power source to its terminals to see if the internal plunger moves. Do not apply power for more than 5 seconds.
4. Replace OCV: If the OCV is confirmed faulty, replace the Bank 2 intake OCV. Be sure to lubricate the new O-rings with clean engine oil before installation to prevent damage.
5. Advanced Mechanical Diagnosis: If the problem persists, the issue is likely more severe, such as a faulty cam phaser or a problem with the timing chain/tensioners. This level of diagnosis is best left to a professional mechanic as it requires significant engine disassembly.

Parts You'll Likely Need

• Intake Oil Control Valve (Bank 2, Left) (OEM #24355-3C100) — This is the most common hardware failure for code P0022 on the 3.8L Lambda engine, often getting stuck or clogged with oil sludge. This part is also referred to as the VVT Solenoid or Spool Valve.
  Trusted brands: Hyundai/Kia (Genuine), Delphi, Dorman
  OEM price range: $80-$120
  Aftermarket price range: $40-$70
• Engine Oil and Filter — Low, old, or incorrect viscosity oil is the leading cause of this code by preventing proper function of the hydraulic VVT system.
  Trusted brands: Mobil 1, Castrol, Valvoline, Kia/Hyundai Genuine Filter
  OEM price range: $50-$90
  Aftermarket price range: $30-$70

Related Codes That Often Appear With This One

• P0012 — Intake 'A' Camshaft Position - Timing Over-Retarded (Bank 1). This code may appear after swapping a faulty Bank 2 OCV to Bank 1 for diagnostic purposes.
• P0300 — Random/Multiple Cylinder Misfire can occur because the incorrect valve timing on Bank 2 disrupts the combustion process.
• P0302, P0304, P0306 — Misfire codes for the specific cylinders on Bank 2 (2, 4, and 6) can be triggered by the incorrect valve timing on that bank.

Technical Service Bulletins (TSBs) & Recalls

• TSB ENG 046: CVVT OCV Inspection: A Kia TSB from May 2009 provides a detailed inspection procedure for the Oil Control Valve (OCV) on various models with CVVT, including the Sorento. It advises checking resistance (spec 6.9-7.9 Ohms for Delphi units) and performing a functional test by applying 12V power before replacing the valve. This is recommended for codes like P0011, P0012, P0021, and P0022.

Platform-Specific Known Issues

• Owner Experience: OCV Swap Confirms Failure: A user on a Kia forum with a 2008 Sorento 3.8L reported getting P0022. After an oil change didn't fix the issue, they swapped the front (Bank 2) and rear (Bank 1) intake OCVs. The code then changed to P0012, confirming the original OCV was the culprit. They replaced it with a new part and resolved the problem.
• Importance of OEM Oil Filters: Multiple discussions across forums for Hyundai/Kia vehicles with Lambda engines emphasize the importance of using OEM oil filters. Some aftermarket filters have been anecdotally linked to oil pressure deviations that can trigger VVT-related codes like P0022.

Mechanic-Grade Diagnostic Values

• Oil Control Valve (OCV) Solenoid Resistance — expected: 6.9 - 7.9 Ohms at 68°F (20°C) for Delphi units. Siemens units are 6.8 - 8.0 Ohms.. Failure: A reading of zero, infinite, or outside the specified range indicates a failed solenoid coil.
• Scan Tool Live Data: Desired vs. Actual Camshaft Position (Bank 2) — expected: The 'Actual' value should closely track the 'Desired' value, typically within a few degrees.. Failure: A consistent negative value or a large, lagging difference between the actual and desired angle on Bank 2 confirms an over-retarded condition.
• OCV Connector Voltage — expected: One pin should show battery voltage (~12V) with the key on, engine off. The other pin is the ground-side control from the ECM.. Failure: Zero voltage on the power pin indicates a blown fuse or a break in the power supply wire.

Scan Tool Commands That Help

• Kia GDS (Global Diagnostic System) or advanced aftermarket scanner: CVVT Actuator Test / VVT Solenoid Bi-Directional Control — This command allows a technician to manually activate the Bank 2 intake OCV while the engine is idling. If the solenoid and phaser are working, the engine should stumble or run rough when the command is activated. If there is no change in engine operation, it points to a stuck OCV, a clogged oil passage, or a failed phaser.

Wiring & Ground Locations

• Bank 1 & Bank 2 OCV Connectors — Located on the front of each valve cover, connecting to the Oil Control Valves.. Kia TSB ENG 046 notes that on V6 engines, the Left Hand (Bank 1) and Right Hand (Bank 2) OCV connectors are different colors to prevent them from being swapped. Swapping them would send control signals to the wrong bank, causing timing correlation codes.
• Main Engine Ground — Typically a large gauge wire bolted from the engine block or cylinder head to the chassis frame rail near the battery or strut tower.. A poor engine ground can cause floating voltages and incorrect readings for all engine sensors, including the camshaft and crankshaft position sensors, potentially leading to erroneous timing codes. While not a primary cause, it should be checked for corrosion and tightness.

Real Owner Repair Stories

• YouTube channel 'broke jeep' (Kia Sorento with 3.3L V6 (Lambda family, similar design and causes)) — Check Engine Light with code P0018 (a related cam/crank correlation code, but diagnosis is similar).
  ❌ Tried (didn't work) Replaced both Oil Control Valve actuators (solenoids)., Replaced both camshaft position sensors., Tested all related wiring.
  ✅ What actually fixed it An oil and filter change. The engine was found to be critically low on oil, with only 1.5 to 2 quarts drained from a 5.5-quart system. The lack of oil pressure prevented the CVVT system from operating correctly, triggering the code.

OEM Part Supersession History

• 24355-3C100 → 24355-3C200 — The part was updated by Hyundai/Kia. The -3C200 is the current replacement for the -3C100.
  Heads up: The parts are interchangeable. Ordering 24355-3C100 will typically result in receiving 24355-3C200.

Model Year Variations Within This Range

• 2008-2009: For the 2008 and 2009 model years, the 3.8L V6 became the optional engine, available only on the higher EX trim level. The base and LX trims received a 3.3L V6. This does not change the diagnosis for P0022 on a 3.8L engine but is relevant for vehicle identification.

Diagnostic Flowchart

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: For this specific repair, using used parts is generally not recommended. The primary failure components (OCV, cam phaser) are highly sensitive to oil quality and wear. The cost savings of a used part do not outweigh the risk of inheriting the same problem or having the part fail prematurely.

Donor-vehicle mileage cap: roughly under 80000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• For an OCV: Inspect the filter screens for any metallic debris or heavy sludge, which indicates poor engine health of the donor vehicle.
• For a Cam Phaser: This is not recommended. There is no reliable way to inspect the internal locking pin or wear surfaces without disassembly.
• Verify the donor vehicle did not have a catastrophic engine failure, as debris could have contaminated the VVT components.

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

• Camshaft Phaser (CVVT Actuator): This is a high-labor, critical timing component. The risk of a used or cheap aftermarket phaser failing is too high. Stick with Genuine Hyundai/Kia or a top-tier OEM supplier like Delphi.
• Timing Chain and Tensioners: These are wear items. Never use used timing components.

Aftermarket brands forum-validated for this vehicle:

• Delphi: A known OEM supplier for Hyundai/Kia, their OCVs are considered a reliable alternative to dealer parts.
• Standard Motor Products (SMP): Generally considered a reputable brand for sensors and solenoids.

Brands owners have reported issues with on this vehicle:

• Dorman (for solenoids): While Dorman makes a wide variety of parts, forum discussions frequently advise against using their electronic components like VVT solenoids due to higher-than-average failure rates compared to OEM.
• No-name/white-box brands: Avoid unbranded solenoids from online marketplaces, as quality control is often non-existent.

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 — Intake Camshaft Position Timing - Over-Retarded (Bank 1). This code is the direct counterpart to P0022 for the opposite engine bank. It will often appear during diagnosis if a faulty Bank 2 OCV is swapped to the Bank 1 position.
• P0021 — Intake Camshaft Position Timing - Over-Advanced (Bank 2). This code indicates the opposite timing problem on the same bank (Bank 2). It is caused by the same set of components (OCV, phaser, oil issues) and is referenced in the same diagnostic TSB (ENG 046).
• P0011 — Intake Camshaft Position Timing - Over-Advanced (Bank 1). This is the over-advanced code for the opposite bank (Bank 1). It is related as it points to a failure within the same CVVT system, just on a different component.

Frequently Asked Questions