P0014 on 2007-2010 Saturn Sky: Exhaust Cam Timing Causes and Fixes

What's Unique About the 2007-2010 Saturn Sky

The Ecotec engines in the Saturn Sky and its sibling, the Pontiac Solstice, are well-known for issues with the camshaft position actuator solenoids. The problem is so common that many owners and mechanics consider them a routine maintenance item. The failure is typically caused by engine oil sludge clogging the small screens on the solenoids, which disrupts the oil flow required to adjust cam timing. Furthermore, the 2.4L Ecotec engine, in particular, is known for excessive oil consumption, which can lead to low oil levels that starve the VVT system and accelerate solenoid failure, making P0014 a very frequent code on this platform. While a timing chain issue can also cause this code, the solenoids are a much more frequent and simpler point of failure.

Symptoms You May Notice

• Check Engine Light is on
• Rough or uneven idle
• Sluggish acceleration and poor engine performance
• Reduced fuel economy
• Engine may stall or be hard to start
• Rattling or ticking noise from the engine, especially at startup for 2-5 seconds

Most Likely Causes

1. Faulty Exhaust Camshaft Position Actuator Solenoid 🔴 High Probability This is a very common failure point on GM Ecotec engines. The solenoid's internal passages and filter screens get clogged with oil sludge and debris, causing it to stick. Forum users strongly recommend using genuine ACDelco parts, as some cheaper aftermarket solenoids have been reported to fail prematurely.
   How to confirm: The easiest test is to swap the exhaust solenoid with the identical intake solenoid. Clear the codes. If the code changes from P0014 to P0011 (Intake Camshaft Position), the solenoid is confirmed to be faulty. 🎬 Watch: This video shows the VVT solenoid replacement process. The exhaust solenoid is closer to the firewall.
   Typical fix: Replace the exhaust camshaft position actuator solenoid. It is held in by a single 10mm bolt and is easily accessible on top of the engine.
   Est. part cost: $25-$60
2. Low or Dirty Engine Oil 🟡 Medium Probability The VVT system is operated by oil pressure. The 2.4L Ecotec engine is known for oil consumption issues, which can cause the oil level to drop between changes, starving the VVT system. Incorrect viscosity, low level, or oil that is broken down and contaminated can clog the solenoid passages and prevent proper operation.
   How to confirm: Check the oil level on the dipstick and inspect its condition. If the oil is below the 'add' line, dark, or gritty, this is a likely contributing factor. This should be the very first check performed.
   Typical fix: Perform an oil and filter change using a full synthetic oil of the correct viscosity (5W-30). This should be done before or at the same time as replacing a solenoid.
   Est. part cost: $40-$80

Rare But Worth Checking

• Stretched Timing Chain or Failed Tensioner: While less common than solenoid failure, Ecotec timing chains can stretch over time, causing timing correlation codes. This is a more serious issue. A key symptom is a persistent rattling noise on startup that doesn't go away after a few seconds. If this is the cause, simply replacing solenoids will not fix the problem.
• Failed Camshaft Phaser (Actuator): The gear on the end of the camshaft, known as the phaser or actuator, can fail mechanically or get clogged with sludge. This is much less common than the solenoid failing and is often replaced during a timing chain service.
• Spun Camshaft Reluctor Ring: A GM Technical Service Bulletin (PIP4548D) notes that in some cases, the reluctor ring (which the camshaft position sensor reads) can spin on the camshaft, leading to timing codes. This requires camshaft replacement.
• Blocked Oil Passage: In rare cases, sludge can block the oil passages in the cylinder head leading to the VVT solenoid, preventing even a new solenoid from functioning correctly. This requires more intensive cleaning.

Diagnosis Steps

1. Check Engine Oil: Verify the oil level is full and the oil is clean. If low, top it off. If old or dirty, perform an oil and filter change with 5W-30 full synthetic oil. This is especially critical on the 2.4L engine due to its tendency to consume oil.
2. Inspect Solenoid Connector: Check the electrical connector on the exhaust VVT solenoid for any damage, corrosion, or loose wires.
3. Swap Solenoids: The intake and exhaust VVT solenoids are physically identical and located on top of the valve cover. The exhaust solenoid is closer to the firewall. Unplug both, unbolt them (one 10mm bolt each), and swap their positions. Reinstall and clear the codes.
4. Re-evaluate Codes: Drive the vehicle. If the code P0014 is gone and has been replaced by P0011, you have confirmed the solenoid you moved to the intake side is faulty. Purchase and install a new solenoid.
5. Test Solenoid (Optional): If you have a multimeter, you can test the resistance of the solenoid; it should typically be between 8-13 ohms. However, a solenoid can pass this electrical test and still be mechanically stuck.
6. Advanced Diagnosis: If a new OEM solenoid and fresh oil do not resolve the code, the issue may be more complex. Listen for a startup rattle, which could indicate a stretched timing chain. At this point, professional diagnosis is recommended to check for timing chain issues, a faulty phaser, or blocked oil passages.

Parts You'll Likely Need

• Engine Variable Valve Timing (VVT) Solenoid / Camshaft Position Actuator Solenoid (Exhaust) (OEM #12655421 (may be superseded by 12679100)) — This is the most common cause of P0014 on the Saturn Sky. It gets clogged with oil sludge and fails to properly control cam timing. While physically identical to the intake solenoid (12655420, superseded by 12679099) for diagnostic swapping, they are sold as separate parts. It is often recommended to replace both at the same time.
  Trusted brands: ACDelco (OEM), Delphi, Dorman
  OEM price range: $40-$60
  Aftermarket price range: $25-$45

Related Codes That Often Appear With This One

• P0011 — This is the equivalent code for the intake camshaft. It may appear if the intake solenoid is also failing, or if you swap a bad exhaust solenoid to the intake side for diagnosis.
• P0013 — This code indicates an electrical circuit problem (e.g., open or short) with the same exhaust camshaft actuator solenoid. Seeing P0013 and P0014 together strongly points to a bad solenoid or a problem with its wiring connector.
• P0016 / P0017 — These are crankshaft/camshaft correlation codes. If P0014 appears with these, it increases the likelihood of a more serious mechanical timing issue, like a stretched timing chain.

Technical Service Bulletins (TSBs) & Recalls

• PIP4716F: Discusses a rattle noise at startup and lists P0014 as a possible DTC, pointing to cam actuators or oil/solenoid contamination.
• PIP4469E: An older TSB that also discusses DTCs P0011, P0014, P0016, and P0017 in relation to hesitation or stall conditions on these engines.
• PIP4548D: Describes a rare condition where the camshaft reluctor can spin on the camshaft, causing timing correlation codes.
• TSB #17NA098: Issued for multiple DTCs including P0014 on 2010-2012 models, identifying the cause as camshaft position actuator solenoid valve failure leading to rough running and stalling.
• TSB #PIP5162: Notes that debris can clog the fine mesh screens on the camshaft actuator solenoids, leading directly to this code on Ecotec engines.

Platform-Specific Known Issues

• High Oil Consumption on 2.4L LE5 Engine: The 2.4L Ecotec engine is known for consuming oil at a higher than normal rate, often due to piston ring issues. This leads to low oil levels which can starve the VVT system, causing sludge and triggering code P0014. Owners should check their oil level frequently, not just at oil change intervals.
• TSB #PIP4716F - Startup Rattle with DTCs: A Technical Service Bulletin (TSB #PIP4716F) was issued for a rattle noise at startup that may be accompanied by DTC P0014. The TSB points to potential issues with the cam actuators or contaminated oil/solenoids.

Mechanic-Grade Diagnostic Values

• VVT Solenoid Resistance — expected: 8 to 13 Ohms at room temperature.. Failure: A reading outside this range (especially an open circuit/infinite resistance or a short/near-zero resistance) indicates a failed solenoid coil.
• Scan Tool Live Data: Desired vs. Actual Camshaft Angle — expected: At warm idle, both 'Desired' and 'Actual' exhaust cam angle should be at or very near 0 degrees. The values should closely track each other as engine RPM changes.. Failure: With code P0014 active, the 'Actual' angle will be significantly advanced (a positive number) while the 'Desired' angle remains at 0 degrees.
• VVT Solenoid Connector Voltage — expected: The ECM sends a pulse-width modulated 12-volt signal to the solenoid; it is a power-side switched circuit. One pin on the connector should have a constant ground reference back to the ECM (less than 5 ohms to ground).. Failure: Absence of the ground reference or the 12V signal when commanded by a scan tool points to a wiring or ECM issue, not a solenoid failure.

Scan Tool Commands That Help

• Tech2 / GDS2 (GM Dealer Tools): Engine Output Controls > Camshaft Position Actuator Solenoid — This bidirectional control allows a technician to manually command the solenoid to a specific duty cycle (e.g., 10%, 20%) while observing the 'Actual Camshaft Angle' on live data. If the angle changes with the command, the solenoid, phaser, and oil passages are likely functional, pointing towards a wiring or intermittent issue. If the angle does not change, it confirms a fault in the solenoid, phaser, or oil supply.

Wiring & Ground Locations

• ECM (Engine Control Module) — Located at the left rear corner of the engine compartment, near the brake master cylinder.. The ECM controls the VVT solenoid via a pulse-width modulated signal and provides the ground reference. Poor connections or corrosion at the ECM connectors (X1, X2) can cause this code.
• G103 — A primary engine/chassis ground located on the cowl at the left rear of the engine compartment, above the brake booster.. This is a critical ground point for the ECM. A loose or corroded G103 can cause a host of difficult-to-diagnose electrical issues, including erratic sensor readings and VVT system faults.
• G104 — Located on the engine block/head itself, often at the right rear corner of the engine.. As a direct engine ground, this ensures all sensors and actuators mounted to the engine have a solid ground path. A poor connection here can affect the VVT system's electrical integrity.

Real Owner Repair Stories

• YouTube user video (Chevy Equinox with similar GM Ecotec engine) — Check Engine Light with code P0014.
  ❌ Tried (didn't work) Replaced the exhaust VVT solenoid with a new part., Cleared the code, but it returned within 5 miles.
  ✅ What actually fixed it The first replacement VVT solenoid was defective out of the box. Replacing the brand-new, faulty solenoid with a second new one permanently resolved the code.
• YourMechanic Q&A (Vehicle with 50,000 miles) — Rough running, burning smell, then Check Engine Light with P0014.
  ❌ Tried (didn't work) Shop cleared the code and added more oil, but the light returned the next day.
  ✅ What actually fixed it The root cause was an improperly installed oil filter from a recent oil change, which caused a massive oil leak, low oil level, and subsequent low oil pressure. Replacing the filter correctly and topping off the oil was the necessary precursor to addressing the P0014 code.

When the Usual Fixes Don't Work

• While the most common fix is replacing the VVT solenoid, it is not foolproof. In one documented case involving an Ecotec engine, a user replaced the solenoid to fix a P0014 code, but the check engine light returned almost immediately. The ultimate solution was to replace the *new* solenoid again, as the first replacement part was defective from the factory. This highlights that new aftermarket parts can sometimes be faulty and should not be ruled out during diagnosis if the code persists.

OEM Part Supersession History

• 12655421, 12646784, 12628348, 12578518 → 12679100 — Likely internal improvements to combat sticking and failure from oil contamination.
  Heads up: No known incompatibilities; the latest part number (12679100) is the correct service replacement for all prior versions.

Diagnostic Flowchart

Real Owner Stories

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

Related OBD-II Codes

• P0011 — Intake Camshaft Position System Performance. This is the intake-side equivalent of P0014 and is often seen when performing the solenoid swap test to diagnose a faulty exhaust actuator. It is also grouped with P0014 in TSB PIP4469E.
• P0016 — Crankshaft Position - Camshaft Position Correlation. Listed alongside P0014 in TSB PIP4469E, often related to hesitation, stall conditions, or timing chain/reluctor issues on Ecotec engines.
• P0017 — Crankshaft Position - Camshaft Position Correlation. Also listed in TSB PIP4469E as a related timing correlation code that can appear alongside P0014.
• P0300 — Random/Multiple Cylinder Misfire Detected. Can appear concurrently with P0014 if the stuck camshaft actuator severely alters engine timing, causing rough running and misfires, as reported by owners.

Frequently Asked Questions