P0020 on Ford: How to Diagnose & Fix
Camshaft Position 'A' Actuator Circuit (Bank 2)
1 Ford model · 1 documented issue · 1 critical · $1,500-$4,500 repair
P0020 on Ford by model: symptoms, diagnosis and fix
The first-generation 3.5L EcoBoost (the 2011-2016 engine generation) used in the 2015-2018 Ford Transit 350/350 HD with the twin-turbocharged V6 is known for premature timing chain stretch. The design uses one long primary chain driving two secondary cam chains, and the long primary chain stretches as the links wear individually, causing the chain to effectively grow longer. A stretched chain causes VCT timing correlation codes, cold-start rattling, rough idle, and eventual jumped timing. Ford moved F-150 and other trucks to a second-generation 3.5L EcoBoost with a dual primary chain system in 2017, but the Transit kept the first-generation engine with revised timing components. Transit vans used for commercial/fleet service with high-idle hours accumulate chain wear faster than typical passenger vehicles.
Common Symptoms
- Cold-start rattle from engine (first 2-5 seconds on startup)
- Check engine light with P0016, P0017, P0020, P0021 (cam-crank timing correlation)
- Rough idle, especially when cold
- Poor fuel economy
- Engine hesitation or stumble
- Loss of power under acceleration
- Drivability issues that worsen over time
How to Fix
Complete timing chain replacement required: the primary chain, both secondary chains, all guides, and tensioners must be replaced simultaneously. Later Transits retained the first-generation engine with revised timing components, which are commonly used as the replacement parts. Remanufactured short block or long block replacement is an option for high-mileage engines if chain guides have also failed. Use only 5W-30 full synthetic and change every 5,000-7,500 miles. Labor: 10-14 hours on Transit due to engine mount complexity.
Sources for this issue (1)
P0020 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0020 mean on a Ford?
P0020 stands for "Camshaft Position 'A' Actuator Circuit (Bank 2)." P0020 is a generic powertrain code indicating a fault in the camshaft position (intake/'A') actuator circuit on bank 2 — the side of the engine that does not contain cylinder number one. The engine computer controls a variable valve timing (VVT) solenoid to advance or retard camshaft timing for efficiency and power; this code sets when it detects an electrical problem in that solenoid's control circuit. The result can be reduced performance, rough running, or poor fuel economy. It is usually not an immediate breakdown risk but should be diagnosed to prevent driveability and timing issues. On Ford it is documented across 1 model: Transit.
What are the most common causes of P0020?
The most common causes of P0020 are: Faulty bank 2 camshaft (VVT/oil control) solenoid, Wiring or connector damage to the VVT solenoid, Low or dirty engine oil restricting VVT operation, Clogged VVT solenoid screen/oil passage, Open or short in the actuator control circuit, Failed PCM/ECM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0020 on a Ford?
Published repair estimates on Ford range from $1,500 to $4,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.