P0014 on 2008-2014 Chevrolet Malibu 2.4L: Exhaust Cam Timing Causes and Fixes

What's Unique About the 2008-2014 Chevrolet Malibu

The 2.4L Ecotec engine in this generation of Malibu has a well-documented history of excessive oil consumption, often due to premature piston ring wear. This issue was so prevalent that it led to class-action lawsuits and GM issuing special coverage adjustments. This tendency to run low on oil directly starves the hydraulic VVT system, making low oil level the number one trigger for a P0014 code. Additionally, the camshaft actuator solenoids themselves are a known weak point on these engines, frequently becoming clogged with oil sludge or failing electronically, making them the second most likely point of failure.

Generation note: This range covers the seventh generation (2008-2012) and the start of the eighth generation (2013-2014). The 7th gen primarily used the 2.4L Ecotec engine. For 2013-2014, the base engine became a 2.5L, but the 2.4L was still used in the 'Malibu ECO' trim which used the LAT or LUK mild-hybrid version of the engine. The causes and fixes for P0014 on the 2.4L engine are consistent across these years and engine variants (LE5, LE9, LAF, LEA).

Symptoms You May Notice

• Check Engine Light is on
• Rough, unstable, or shaking idle
• Engine stalling, especially at low speeds or when stopping
• Reduced engine power and poor acceleration
• Worse than normal fuel economy
• Hard starting
• Rattling or knocking noise from the engine, especially on cold starts

Most Likely Causes

1. Low or Dirty Engine Oil 🔴 High Probability The 2.4L Ecotec engine is known for consuming oil between changes due to piston ring issues, a condition acknowledged by GM in TSBs like 13-06-01-003E. The VVT system is hydraulic and highly sensitive to oil level and cleanliness.
   How to confirm: Check the engine oil level on the dipstick. Inspect the oil's color and condition. If the level is low or the oil is dark and sludgy, this is your likely cause. This should always be the first check.
   Typical fix: Perform an oil and filter change using the manufacturer-recommended full synthetic 5W-30 oil. Top off the oil and clear the codes to see if the problem is resolved.
   Est. part cost: $40-$100
2. Faulty Exhaust Camshaft Position Actuator Solenoid 🔴 High Probability These solenoids are a very common failure point on Ecotec engines. Internal screens get clogged by oil debris, or the solenoid fails electronically, causing it to stick. The issue is so common it's the subject of countless DIY repair videos. 🎬 Watch: A complete diagnostic and repair walkthrough for P0014 codes.
   How to confirm: Swap the exhaust solenoid (rear position, often with a black connector) with the identical intake solenoid (front position, 🎬 See how to properly test your VVT solenoids before replacing. often with a gray connector). Clear the codes and drive the vehicle. If the code changes to P0011 (Intake Camshaft Position), the solenoid is faulty.
   Typical fix: Replace the exhaust camshaft position actuator solenoid. It is held by a single 10mm bolt and is easily accessible on top of the engine after removing the plastic engine cover. 🎬 Watch this quick guide on replacing the camshaft actuator solenoids. Many owners replace both intake and exhaust solenoids at the same time as preventative maintenance.
   Est. part cost: $20-$60
3. Stretched Timing Chain or Failed Tensioner ⚪ Low Probability While less common than oil or solenoid issues, the timing chains on 2.4L Ecotec engines are known to stretch over time, and the plastic guides can wear out or break, especially after 100,000 miles. This is often accelerated by running the engine with low oil levels. Manufacturer Bulletin #PIP4716F notes that a short, sharp rattle noise from the front of the engine at start up may be accompanied by codes P0011, P0014, or P0016.
   How to confirm: This is a more advanced diagnosis. A key symptom is a persistent rattling noise from the passenger side of the engine, especially at startup. A mechanic can confirm by checking cam/crank correlation with a professional scan tool or by physical inspection, which requires removing the valve cover and/or timing cover.
   Typical fix: Replace the timing chain, guides, and tensioners. This is a labor-intensive job (7-8 hours) that often requires professional service. It is recommended to replace the phasers at the same time.
   Est. part cost: $150-$400 for a kit

Rare But Worth Checking

• Failed Camshaft Phaser (Actuator): The gear on the end of the camshaft that actually does the rotating can fail mechanically, often getting stuck in an advanced position. This is much less common than a solenoid failure and usually happens at high mileage or due to severe oil neglect. TSB PIP5162 suggests replacing the actuator if cleaning passages and replacing the solenoid doesn't work.

Diagnosis Steps

1. Check Engine Oil: Verify the oil level is full and the oil is clean. Use full synthetic 5W-30 oil. If low, top it off, clear the code, and see if it returns. If the oil is old or dirty, perform a complete oil and filter change. This solves the problem in many cases.
2. Inspect Solenoid Connector: Check the wiring connector on the exhaust VVT solenoid (rear position) for any damage, corrosion, or oil contamination. Ensure it is plugged in securely.
3. Swap Solenoids: Locate the two VVT solenoids on top of the valve cover after removing the plastic engine cover. The exhaust solenoid is the one closer to the firewall (rear, often black connector) and the intake is closer to the front (often gray connector). Unplug both, remove their single 10mm retaining bolts, and swap their positions.
4. Re-Scan for Codes: Drive the vehicle until the check engine light comes back on. If the code is now P0011, the solenoid you moved to the intake position is bad. Purchase and install a new exhaust solenoid (Part #12655421 or #12679100).
5. If Code P0014 Returns: If the same code comes back after the swap, the issue is not the solenoid. The problem may be a clogged oil passage, a failing camshaft phaser, or a timing chain issue. Per TSB PIP5162, the next step would be to clean the oil passages.
6. Listen for Noise: Pay close attention to any rattling or ticking noises from the passenger side of the engine. A rattle strongly suggests a timing chain problem that needs immediate professional attention to avoid catastrophic failure.

Parts You'll Likely Need

• Exhaust Camshaft Position Actuator Solenoid (OEM #12655421 (may be superseded by 12679100)) — This is the most common part to fail, either by getting clogged with debris from dirty oil or by failing electronically. It is a well-known weak point on the 2.4L Ecotec.
  Trusted brands: ACDelco (GM Genuine), Delphi, Dorman
  OEM price range: $40-$70
  Aftermarket price range: $20-$50
• Intake Camshaft Position Actuator Solenoid (OEM #12655420 (may be superseded by 12679099)) — Often replaced at the same time as the exhaust solenoid as a preventative measure, since they are the same age and subject to the same conditions. The intake solenoid is identical in function but has a different part number.
  Trusted brands: ACDelco (GM Genuine), Delphi, Dorman
  OEM price range: $40-$70
  Aftermarket price range: $20-$50

Related Codes That Often Appear With This One

• P0013 — P0013 indicates an electrical circuit problem (open/short) with the same exhaust camshaft actuator solenoid. If you see both, it strongly points to a failed solenoid or a wiring/connector issue.
• P0011 — This is the equivalent code for the intake camshaft. Seeing both P0011 and P0014 together often points to a systemic problem affecting both cams, like very low/dirty oil or a timing chain issue.
• P0016 — This code indicates a correlation error between the crankshaft and camshaft, suggesting a more serious base timing problem like a jumped or stretched timing chain. Seeing this with P0014 makes a timing chain issue much more likely.

Technical Service Bulletins (TSBs) & Recalls

• PIP5162: Advises technicians to remove and clean camshaft solenoid screens for P0011 and/or P0014 codes. If that doesn't work, it instructs to blow out oil passages and consider replacing the camshaft actuator itself.
• PIP5167: Provides information to technicians regarding vehicles that have a Diagnostic Trouble Code P0300, noting that P0011 and/or P0014 may also be set in the Engine Control Module, requiring inspection of the camshaft solenoid screens for debris.
• 13-06-01-003F: Details the procedure for confirming excessive oil consumption on the 2.4L LAF

Platform-Specific Known Issues

• The 2.4L Ecotec engine has a known issue with high oil consumption due to piston ring design, which can lead to low oil levels that trigger VVT codes like P0014. GM acknowledged this in TSB 13-06-01-003F, recommending an oil consumption test and potential piston/ring replacement.
• GM issued several Technical Service Bulletins (TSBs) related to this code. PIP5162 advises inspecting and cleaning the solenoid screens for debris with brake cleaner, and if that fails, blowing out oil passages and potentially replacing the camshaft actuator (phaser).

Mechanic-Grade Diagnostic Values

• Camshaft Position Actuator Solenoid Resistance — expected: 8 to 13 Ohms. Failure: A reading of infinity (Open Loop), near zero (short), or a fluctuating/unstable reading while wiggling the connector indicates a failed solenoid.
• Scan Tool Live Data: Desired vs. Actual Camshaft Position Angle — expected: The 'Actual' position angle should closely track the 'Desired' position angle as engine RPM and load change.. Failure: A significant and persistent deviation where the 'Actual' value does not match the 'Desired' value, or is stuck at a certain angle, points to a problem in the VVT system (solenoid, phaser, or oil pressure).
• ECM Bias Voltage at Solenoid Connector (Key-On, Engine-Off, Connector Unplugged) — expected: Approximately 2.5 Volts DC on the control wire.. Failure: No voltage may indicate a wiring issue back to the ECM. This is a diagnostic voltage supplied by the ECM to detect circuit faults.

Scan Tool Commands That Help

• GDS2 / Professional Scan Tool: Camshaft Position Actuator Active Test (or Solenoid Control) — This bidirectional control allows a technician to command the exhaust solenoid on and off (or in % increments) while the engine is idling. A functional system will cause a noticeable change in engine RPM or may even cause a stall. If the command is sent but the engine sound and 'Actual Cam Position' PID do not change, it confirms a fault in the solenoid, its oil passages, or the phaser itself, isolating the problem from the wiring or ECM.

Wiring & Ground Locations

• G106 / G107 — On the left (driver's) side of the engine block. G106 is often on the rear of the block, while G107 is on the lower left side.. These are primary engine grounds for the ECM and its sensors. A loose or corroded connection at these points can cause erratic sensor readings, including from the cam/crank sensors, potentially leading to false timing codes or improper VVT operation.
• Exhaust VVT Solenoid Connector — The rearward of the two VVT solenoids on top of the valve cover, closer to the firewall. It typically has a black plastic connector, while the intake solenoid has a gray one.. This is the direct electrical connection to the component most likely to fail. The connector and its wires are subject to heat and vibration, and should be checked for damage, corrosion, or oil contamination which can cause an open or short in the P0013/P0014 circuit.

Real Owner Repair Stories

• YouTube user 'Fix It All' (2012 Chevy Equinox 2.4L) — Check Engine Light with code P0014 returned shortly after replacing the exhaust VVT solenoid.
  ❌ Tried (didn't work) Replacing the exhaust VVT solenoid with a new aftermarket part.
  ✅ What actually fixed it The new aftermarket solenoid was faulty out of the box. Replacing it a second time with another new solenoid (brand not specified) permanently resolved the code.
• Reddit user in /r/MechanicAdvice (2014 Chevy Equinox 2.4L) — Persistent P0014 code.
  ❌ Tried (didn't work) Oil and filter change., Replacing the exhaust solenoid.
  ✅ What actually fixed it The user's diagnostic tool pointed towards the cam actuator (phaser) or ECM after the common fixes failed. The vehicle was taken to a dealer for final diagnosis, implying a more complex issue than the solenoid.
• NHTSA ODI #10870877 — An owner reported having to get a repair on the exhaust VVT solenoid for the exhaust side of the engine after encountering codes P0013 and P0014.
• NHTSA ODI #11256684 — An owner reported that their check engine light came on and a dealership diagnostic confirmed code P0014, which is a diagnostic trouble code for "Camshaft Position B - Timing Over-Advanced or System Performance (Bank 1)".

OEM Part Supersession History

• 12655421 → 12679100 — Standard part evolution for improved reliability or manufacturing process changes.
  Heads up: The new part number (12679100) is a direct replacement for the old one (12655421) for the exhaust solenoid. No known incompatibilities exist.
• 12655420 → 12679099 — Standard part evolution for improved reliability or manufacturing process changes.
  Heads up: This is for the intake solenoid. The new part number (12679099) is a direct replacement for the old one (12655420).

Model Year Variations Within This Range

• 2008-2011 (approx.): Engines in this period were primarily Port Fuel Injected (PFI) variants like the LE5 and LE9. These engines feature dual variable valve timing.
• 2012-2014 (approx.): Later models, especially the Malibu ECO, used Direct Injection (DI) versions of the 2.4L engine, such as the LAF, LEA, and LUK. While the VVT system functions similarly and the P0014 code has the same common causes (oil, solenoids), the fuel system and piston design are different, and the compression ratio is higher (11.2:1 vs 10.4:1). These differences do not fundamentally change the diagnosis for P0014 but are important for other engine work.

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 code frequently appears during the diagnostic process if you swap a faulty exhaust VVT solenoid into the intake position to test it.
• P0013 — Exhaust Camshaft Position Actuator Circuit. Often appears alongside P0014 when the exhaust solenoid fails electronically rather than just mechanically sticking.
• P0016 — Crankshaft Position - Camshaft Position Correlation. Directly related to the timing chain stretch issue on the 2.4L Ecotec, which mechanics check for when diagnosing persistent P0014 codes.
• P0300 — Random/Multiple Cylinder Misfire Detected. A common companion code resulting from the rough, unstable idle and engine stalling symptoms caused by severe VVT system timing issues.

Frequently Asked Questions