P0013 on 2008-2010 Saturn Vue 2.4L: Exhaust Cam Actuator Circuit Causes and Fixes

What's Unique About the 2008-2010 Saturn Vue

The 2.4L Ecotec engine was used extensively across many GM brands, including Chevrolet, Pontiac, and Buick. On this engine, failure of the intake and exhaust camshaft position actuator solenoids is a very common and well-documented issue. The problem is not unique to the Saturn Vue but is a characteristic weak point of this powertrain, often caused by oil contamination, sludge buildup from short trips, or simple electronic failure of the solenoid itself. Some of these engines were also known for excessive oil consumption, which can lead to low oil levels that starve the VVT system and cause these solenoids to fail.

Symptoms You May Notice

• Check Engine Light is on
• Rough or unstable idle
• Poor acceleration and loss of power
• Reduced fuel economy
• Engine may hesitate or stall at low speeds.
• Rattling noise from the engine, especially on cold starts.

Most Likely Causes

1. Failed Exhaust Camshaft Position Actuator Solenoid 🔴 High Probability These solenoids are a known high-failure item on the 2.4L Ecotec engine due to internal electronic faults (open or shorted coil windings) or clogging from oil contaminants and sludge.
   How to confirm: Swap the exhaust (black connector) and intake (gray connector) solenoids. If the code changes to P0010 (intake circuit), the solenoid is faulty. Alternatively, test the solenoid's resistance with a multimeter; a reading outside the 8-13 ohm specification 🎬 Watch: How to test a VVT solenoid with a multimeter for this GM engine indicates failure. A failed solenoid will often read in the mega-ohms (MΩ) or show an open circuit ('OL').
   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 valve cover after removing the plastic engine cover. 🎬 Watch this step-by-step walkthrough for replacing the camshaft solenoids
   Est. part cost: $20-$50
2. Low or Dirty Engine Oil 🟡 Medium Probability The VVT system is operated by oil pressure. Oil sludge or a low oil level can clog the small screens on the solenoid, preventing it from functioning correctly. The 2.4L Ecotec can be prone to oil consumption, making low oil levels a more frequent issue if not monitored.
   How to confirm: Check the engine oil dipstick. If the oil is low or appears very dark and sludgy, this is a likely contributor to the problem.
   Typical fix: Perform an engine oil and filter change using the manufacturer-specified oil viscosity. 🎬 See how cleaning or replacing solenoids fixes rough idle issues If the code was caused by low oil pressure or contamination, this might resolve the issue.
   Est. part cost: $30-$70
3. Damaged Wiring or Connector ⚪ Low Probability
   How to confirm: Visually inspect the wiring harness and electrical connector for the exhaust camshaft solenoid. Look for any signs of frayed wires, corrosion in the connector pins, oil contamination inside the connector, or a loose connection.
   Typical fix: Repair the damaged section of wiring or clean/replace the connector. The locking tab on the connector can become brittle and break, leading to a poor connection.
   Est. part cost: $5-$30

Rare But Worth Checking

• Stretched Timing Chain: While P0013 is a circuit code, on high-mileage 2.4L Ecotec engines, it can sometimes appear alongside timing performance codes like P0014 or P0016. If replacing the solenoids does not fix the issue and performance codes are present, a stretched timing chain could be the underlying cause, which is a much more involved repair.
• Faulty Engine Control Module (ECM): This is extremely rare. The ECM should only be considered after all other possibilities, including the solenoid, its wiring, and mechanical timing, have been definitively ruled out.

Diagnosis Steps

1. Check the engine oil level and condition. Top off or change the oil if it is low or dirty.
2. Inspect the electrical connector and wiring for the exhaust camshaft position actuator solenoid (the one with the black connector, typically towards the rear of the engine) for any visible damage.
3. Clear the codes with a scan tool and test drive the vehicle to see if the code returns. Sometimes it takes a few drive cycles for the light to go out on its own after a repair.
4. If the code returns, the easiest test is to swap the exhaust solenoid with the intake solenoid (gray connector). They are located next to each other on top of the engine and are interchangeable for testing purposes.
5. Clear the codes again. If the code changes to P0010 (Intake Camshaft Position Actuator Circuit), the solenoid you moved is faulty and needs to be replaced.
6. If the code P0013 returns, the problem is likely in the wiring or the ECM. Use a multimeter to check the resistance of the solenoid. It should be between 8 and 13 ohms. An infinite or very high reading confirms a failed solenoid.
7. If solenoid resistance is good, check for battery voltage (approx. 12V) at the power pin on the harness connector with the key on. Then, check the resistance of the ground control wire between the connector and the ECM, which should be less than 5 ohms.

Parts You'll Likely Need

• Exhaust Camshaft Position Actuator Solenoid (OEM #12655421) — This is the most common failure point for code P0013 on the 2.4L Ecotec engine. The original part number 12655421 has been superseded by 12679100.
  Trusted brands: ACDelco (OEM), Delphi, Dorman (p/n 917-216)
  OEM price range: $40-$60
  Aftermarket price range: $20-$40

Related Codes That Often Appear With This One

• P0014 — P0014 ('B' Camshaft Position - Timing Over-Advanced) often appears with P0013 because a faulty actuator circuit (P0013) can prevent the ECM from controlling the camshaft's position, leading to a timing performance error (P0014).
• P0010 — P0010 is the equivalent circuit code for the 'A' (Intake) camshaft position actuator. It's common for both solenoids to fail around the same time, so seeing P0010 and P0013 together is not unusual.

Technical Service Bulletins (TSBs) & Recalls

• GM Bulletin 19-NA-203: Addresses rough running, hesitation, and DTCs P0010, P0011, P0013, or P0014, recommending the replacement of both camshaft position actuator solenoid valves.
• GM TSB 17-NA-098: While not the exact bulletin number from pass 1, this TSB for 2010-2012 Terrains with the same 2.4L engine also points to actuator solenoids as the cause for codes P0010, P0011, P0013, or P0014.

Platform-Specific Known Issues

• A GM service bulletin for similar models (Chevy Equinox, GMC Terrain) with the 2.4L engine recommends replacing both the intake and exhaust solenoids if codes like P0013 are present, as failure of one often precedes failure of the other.
• The 2.4L Ecotec engine in this era had known issues with high oil consumption, which can lead to low oil levels that cause VVT solenoid failure. It is critical to regularly check the oil level.

Mechanic-Grade Diagnostic Values

• Camshaft Position Actuator Solenoid Resistance — expected: 8-13 Ohms. Failure: A reading of 'OL' (open circuit), near zero (short circuit), or a very high resistance (e.g., 100 kOhms) indicates a failed solenoid.
• Solenoid Harness Connector Voltage (Key On, Engine Off) — expected: 11V - 12.5V (Battery Voltage). Failure: No voltage on the power supply pin indicates a break in the power feed wire or a blown fuse.
• Solenoid Low Reference (Ground) Circuit Resistance — expected: Less than 5 Ohms. Failure: Resistance greater than 5 Ohms indicates an open or high resistance in the ground control circuit between the solenoid connector and the ECM.
• Scan Tool Live Data: Desired vs. Actual Camshaft Position — expected: At idle, both values should be near 0 degrees. As RPMs increase, the 'Actual' value should closely track the 'Desired' value.. Failure: The 'Actual' value does not change or does not follow the 'Desired' value, indicating a non-responsive VVT system.

Scan Tool Commands That Help

• GDS2 / Tech2: Camshaft Position Actuator Solenoid Test / Control — This bidirectional command manually energizes the VVT solenoid while the engine is running. A noticeable change in engine operation (stumble, RPM drop, or stall) confirms the solenoid, oil passages, and phaser are mechanically working. No change in engine operation points directly to a fault in that system, helping to differentiate a component failure from a wiring issue without disassembly.

Wiring & Ground Locations

• Exhaust VVT Solenoid Connector — On top of the valve cover, toward the firewall (rear of the engine). The connector is typically black.. This is the primary connection point for testing. One pin is 12V power (Key On), the other is the PWM ground signal from the ECM. Corrosion or a broken locking tab here is a common point of failure.
• G107 — A primary engine ground located at the rear of the engine for the 2.4L Ecotec.. A loose or corroded G107 can cause unstable voltage and ground references for the entire engine management system, leading to various electrical fault codes, including P0013.
• G103 / G106 — Grounds located on the left side of the engine compartment and/or engine block.. These are critical ground points for the ECM and underhood fuse block. A fault can cause erratic signals and false codes.
• Engine Control Module (ECM) — Located in the left rear of the engine compartment on the 2008 Saturn Vue.. The control circuit for the VVT solenoid originates at the ECM. All wiring continuity and short-to-ground tests will terminate at the ECM connector.

Real Owner Repair Stories

• YouTube channel 'Super Mario Diagnostics' (2012 Chevy Malibu 2.4L Ecotec (platform mate)) — Check Engine Light with codes P0013 and P0014, no drivability issues reported by customer.
  ❌ Tried (didn't work) Initial diagnosis was done with a scan tool active test, which confirmed the exhaust solenoid was not responding while the intake solenoid was.
  ✅ What actually fixed it The technician tested the resistance of the exhaust solenoid and found it was ~100,000 ohms (100 kOhms), far outside the 8-13 ohm spec. Replacing the exhaust VVT solenoid resolved the codes.
• YouTube channel 'MotorCar Makeover' (2012 Chevy Equinox 2.4L Ecotec (platform mate)) — Check Engine Light with code P0013, needed to pass emissions test.
  ✅ What actually fixed it The owner replaced the exhaust ('outtake') VVT solenoid. Noted that the new part's retaining bolt was an 8mm head, while the original was 10mm. The repair fixed the code.

OEM Part Supersession History

• 12655421 → 12679100 — Standard part revision and improvement by the manufacturer.
• 12628348, 12646784 → 12655421 and subsequently 12679100 — Earlier revisions of the same exhaust VVT solenoid.

Model Year Variations Within This Range

• 2008-2010: All 2.4L engines in the 2008-2010 Saturn Vue are the LE5 port-injected variant. Platform mates like the Chevy Equinox introduced the direct-injected LAF engine in 2010. While the P0013 fault is common to both engine types, diagnosis and repair for the specified Saturn Vue will always be on the LE5 engine.

Diagnostic Flowchart

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: For this specific repair, a used VVT solenoid is NOT recommended. The part is a very common failure item with internal electronic and mechanical components that cannot be visually inspected. The low cost of a new, warrantied part makes the risk of a used part failing shortly after installation not worthwhile.

What to inspect on the donor part:

• Not applicable as used parts are not recommended for this component.

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

• While not strictly 'OEM-only', it is highly recommended to use either the OEM ACDelco part or a reputable OEM supplier like Delphi. These engines are known to be sensitive to the quality and response rate of the VVT solenoids.

Aftermarket brands forum-validated for this vehicle:

• Dorman (part number 917-216) is a widely available aftermarket brand that is generally considered a reliable alternative to OEM.

Brands owners have reported issues with on this vehicle:

• Unbranded, low-cost solenoids from online marketplaces (e.g., Amazon, eBay) without a recognized brand name are frequently reported by owners to be dead-on-arrival or to fail prematurely.

Real Owner Stories

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

Related OBD-II Codes

• P0010 — This is the equivalent circuit code for the *intake* camshaft position actuator solenoid. It is commonly used as a diagnostic confirmation for P0013; if swapping the solenoids causes the code to change to P0010, the solenoid is the confirmed failure point.
• P0014 — This code indicates 'Exhaust (B) Camshaft Position Timing - Over-Advanced'. It is a performance code for the same camshaft that P0013 monitors. P0013 points to an electrical fault in the solenoid circuit, while P0014 can be a direct result of that fault, as the solenoid can no longer correctly control the camshaft's timing.
• P0011 — This code indicates 'Intake (A) Camshaft Position Timing - Over-Advanced'. It can appear alongside P0013 if there is a systemic issue affecting the entire VVT system, such as severe oil sludge, low oil pressure, or a base engine timing problem.

Frequently Asked Questions