P0019 on 2015-2019 Ford Fusion Hybrid: Causes for a 'Bank 2' Code on an I4 Engine

What's Unique About the 2015-2019 Ford FUSION HYBRID

The appearance of a 'Bank 2' code on an inline-4 engine is the most confusing aspect of P0019 for this vehicle. Owners and technicians should not waste time looking for a non-existent Bank 2. The key is to focus on the substance of the code: a correlation issue with 'Sensor B' (the exhaust camshaft). Ford has issued a Technical Service Bulletin (TSB SSM 50067) that acknowledges a range of these timing codes (including P0019) across many of its vehicles, pointing to a common problem with Variable Camshaft Timing (VCT) solenoids sticking due to small debris in the engine oil. This makes the issue less about the confusing code number and more about a well-documented component failure.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Check Engine Light is on
• Rough or fluctuating idle
• Engine hesitation or stumbling during acceleration
• Reduced fuel economy
• Engine may stall at low speeds
• Engine may run rough or make rattling noises

Most Likely Causes

1. Sticking Exhaust VCT Solenoid (Oil Control Valve) 🔴 High Probability Ford TSB SSM 50067 directly identifies that small debris in the engine oil can cause VCT solenoids to stick, triggering this and similar codes. This is the most widely reported cause in owner forums.
   How to confirm: Use a scan tool to perform the 'HK12' test, which cycles the solenoid 10 times to attempt to clear debris, as recommended by the TSB. If the code returns, a common DIY diagnostic is to swap the exhaust and intake VCT solenoids; if the code changes to P0016 (Bank 1, Sensor A), the solenoid is confirmed faulty.
   Typical fix: Replace the exhaust VCT solenoid. Many owners choose to replace both intake and exhaust solenoids at the same time as preventative maintenance.
   Est. part cost: $30-$80
2. Low or Dirty Engine Oil 🔴 High Probability The VCT system is hydraulic and highly sensitive to oil pressure and cleanliness. Contaminated oil is the source of the debris that causes the VCT solenoid to fail, as noted in TSB SSM 50067.
   How to confirm: Check the oil level on the dipstick and inspect its color and consistency. If the oil is low, past its change interval, or appears dark and sludgy, this is a likely contributor.
   Typical fix: Perform an engine oil and filter change using the manufacturer-specified oil (e.g., 5W-20 Synthetic Blend).
   Est. part cost: $40-$70
3. Faulty Camshaft Position Sensor ('B' - Exhaust) 🟡 Medium Probability → Shop Engine Camshaft Position Sensor
   How to confirm: Test the sensor's resistance with a multimeter to see if it's within the specifications listed in the vehicle's service manual. A scan tool can also monitor the sensor's live data for dropouts or erratic readings. However, this part is less likely to fail than the VCT solenoid.
   Typical fix: Replace the exhaust camshaft position sensor. 🎬 See this guide for replacing the camshaft position sensors.
   Est. part cost: $25-$60
4. Stretched Timing Chain or Worn Timing Components ⚪ Low Probability → Shop Engine Timing Chain This is a mechanical failure that typically occurs at higher mileage (over 100,000-150,000 miles) due to normal wear and tear.
   How to confirm: This is a complex diagnosis. It often presents with a distinct rattling noise from the engine. Diagnosis requires removing the valve cover to physically inspect the timing chain for slack. 🎬 Watch: Common signs and symptoms of timing chain failure. If the chain has jumped a tooth, it will cause a persistent correlation code that part swaps won't fix.
   Typical fix: Replace the timing chain, guides, and tensioners. This is a labor-intensive and expensive job.
   Est. part cost: $200-$500

Rare But Worth Checking

• Damaged Wiring or Connectors: Check the wiring harness for the camshaft position sensor and VCT solenoid for any signs of fraying, corrosion, or loose pins before replacing parts.
• Failed Camshaft Phaser: → Shop Engine Camshaft The phaser is the gear on the end of the camshaft that actually adjusts the timing. It can fail mechanically by getting stuck or breaking, but this is far less common than a solenoid failure.

Diagnosis Steps

1. Verify the engine oil level and condition. If low, dirty, or overdue for a change, perform an oil and filter change with the correct 5W-20 viscosity oil. Clear the code and see if it returns.
2. If the code returns, connect a high-level scan tool. Look for the diagnostic routine to cycle the exhaust VCT solenoid (often called a VCT command or test), as recommended by Ford TSB SSM 50067, to try and dislodge any debris.
3. Visually inspect the wiring and connectors for the exhaust VCT solenoid and the exhaust camshaft position sensor for any damage or corrosion.
4. If cycling the solenoid does not resolve the issue, the next step is to replace the exhaust VCT solenoid. 🎬 Watch: How to locate and replace the VCT solenoid. This is the most probable failed component. Note that on this engine, the valve cover must be removed to access the solenoids.
5. As a confirmation step before buying parts, you can swap the intake and exhaust solenoids. If the code changes to P0016 (related to the intake cam), the solenoid is definitively the problem.
6. If the code persists after replacing the solenoid, test the camshaft position sensor using a multimeter or by monitoring its output on a scan tool.
7. If all sensors, wiring, and solenoids are confirmed to be good, the issue is likely mechanical. A professional should inspect the timing chain, tensioners, and phasers for wear or damage.

Parts You'll Likely Need

• Engine Variable Valve Timing (VVT) Solenoid (Exhaust) (OEM #CM5Z-6M280-C) — This is the most common cause of P0019, as identified by Ford's own service bulletins. It gets stuck due to oil debris, preventing correct camshaft timing adjustment.
  Trusted brands: Motorcraft (OEM), Dorman (e.g., 916-722), Standard Motor Products (SMP), Carquest Premium (e.g., VVA1077)
  OEM price range: $60-$100
  Aftermarket price range: $28-$65

Related Codes That Often Appear With This One

• P0017 — Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B). This is the 'correct' code for this fault on an inline engine. Seeing P0019 may be a peculiarity of the scan tool or PCM software, but the underlying issue is the same.
• P0014 — 'B' Camshaft Position - Timing Over-Advanced (Bank 1). This code is more specific about the nature of the timing error on the exhaust cam and often points to a stuck VCT solenoid.

Technical Service Bulletins (TSBs) & Recalls

• SSM 50067: States that various VCT codes (P0011, P0012, P0014, P0015, P0016, P0017, P0018, P0019, etc.) on 2015-2021 Ford and Lincoln vehicles can be caused by a VCT solenoid sticking due to small debris.

Platform-Specific Known Issues

• A known issue documented in Ford Technical Service Bulletin (TSB) #SSM 50067 involves VCT-related DTCs, including P0019, being caused by small debris making the VCT solenoid stick. The bulletin advises attempting to clear the debris by cycling the solenoid with a scan tool before replacement.
• The VCT solenoids on the 2.0L I4 engine are located under the valve cover, making replacement more involved than on engines where they are externally accessible. This requires removing the valve cover, which also means it's a good time to replace the valve cover gasket.

Mechanic-Grade Diagnostic Values

• VCT Solenoid Internal Resistance — expected: 7 to 14 Ohms. Failure: A reading of OL (open circuit) or very low resistance (short circuit) indicates a failed solenoid.
• VCT Solenoid Connector Voltage (Key On, Engine Off) — expected: ~12V (Battery Voltage) on the power supply pin. Failure: No voltage suggests a break in the power supply circuit from the PCM power relay or a blown fuse.
• Camshaft Position Sensor Signal Voltage — expected: Fluctuating between 0.5V and 4.5V as the engine runs. Failure: No voltage or a static voltage indicates a failed sensor or wiring issue.
• Minimum Oil Pressure at Idle — expected: 15 PSI. Failure: Low oil pressure can cause the camshaft phasers to operate incorrectly or oscillate, leading to timing correlation codes.

Hidden / Shadow Codes Worth Checking

• Mode $06, Test ID $21, Comp ID $80: This monitor test specifically checks the Bank 1 index-ratio and maximum limit for the variable camshaft timing system. A failure here can point to a cam/crank correlation issue before a standard DTC like P0019 is set. (see via A professional scan tool capable of reading Ford-specific Mode $06 data.)

Scan Tool Commands That Help

• Ford IDS (or equivalent high-level scanner): Pinpoint Test HK12 — This is the specific diagnostic routine mentioned in TSB SSM 50067. It commands the VCT solenoid to cycle 10 times to dislodge small debris that may be causing it to stick. Use this as a first step after an oil change before deciding to replace the solenoid.
• Ford IDS (or equivalent high-level scanner): VCTADV (Camshaft Advance PID) & VCTADVERR (Camshaft Advance Error PID) — Monitor these live data PIDs while running the engine. VCTADV shows the commanded cam angle, while VCTADVERR shows the difference between commanded and actual positions. A high or unchanging VCTADVERR value for the exhaust cam confirms a correlation problem.

Wiring & Ground Locations

• G104 — On the 2.3L engine, it is located in front of the right strut tower. On the 3.0L, it's on the right front of the engine compartment. The 2.0L location is similar, on the passenger side front of the engine compartment.. This is a primary engine ground point. A corroded or loose connection at G104 can cause erratic behavior and incorrect readings from various engine sensors, including the camshaft and crankshaft position sensors, leading to false correlation codes.
• Camshaft Position Sensor Connector — On the end of the cylinder head, near the camshaft.. This is a 3-wire Hall-effect sensor. The wires are typically: 1. Reference Voltage (often 5V from PCM), 2. Signal (sends position data to PCM), 3. Ground (provided by PCM). Damage to this connector or its pigtail is a common point of failure.
• VCT Solenoid Connector — On top of the valve cover, connecting to the solenoid located underneath.. This is a 2-wire connector. One wire provides 12V power (from the PCM power relay), and the other is a duty-cycled ground controlled by the PCM to actuate the solenoid. Checking for 12V power here is a key diagnostic step.

OEM Part Supersession History

• CM5Z-6M280-A → CM5Z-6M280-C — The part was updated by Ford. While the specific reason is not officially documented, supersessions for electronic components like VCT solenoids often involve improvements to internal materials or coil windings to increase durability and resistance to failure from heat or oil contaminants.