P1519 on Mercury: How to Diagnose & Fix
Intake Camshaft Control / Adjustment Bank 1 Malfunction
1 Mercury model · 1 documented issue · $120-$600 repair
P1519 on Mercury by model: symptoms, diagnosis and fix
The 2.5L Duratec V6's IMRC system uses an electric actuator with plastic gears and plastic linkage bushings to open the secondary intake runners at higher rpm. The plastic linkage bushings break and the actuator's gears jam or strip — a failure common to all Fords with this IMRC design — leaving the runners stuck closed (P1519) or stuck open (P1518). With the runners stuck closed the engine loses most of its power above roughly 3,000 rpm and the check engine light prevents passing emissions testing.
Common Symptoms
- Check engine light with P1518 or P1519
- Noticeable loss of power above 3,000 rpm
- Sluggish top-end acceleration
- Failed emissions inspection
How to Fix
Replace the broken plastic linkage bushings (a few dollars in parts), clean and re-seat the actuator's plastic gears, or replace the IMRC actuator assembly outright. Verify the linkage on both banks moves freely after repair.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- F5RZ9F955AB IMRC linkage-retainer bushings, five packOEMFord F5RZ9F955AB replacement
Confirm the bushing dimensions and intact actuator/runner shafts before purchase.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (7)
- Intake Manifold Runner Control Stuck Closed | New Cougar Forumforum
- 2002 cougar imcr | Mercury Cougar Ownersforum
- SOLVED: How do I fix imrc on the 2002 mercury cougar p1519 - Fixyaforum
- Looking for intake manifold runner control please and thank you | New Cougar Forumforum
- code P1519 Inlet manifold runner control malfunction (Stuck Closed) | New Cougar Forumforum
- IMRC Stuck Open? P1518 | New Cougar Forumforum
- P1518 – Intake Manifold Runner Control Stuck Open (Ford, Lincoln, Mercury) – TroubleCodes.netarticle
P1519 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 P1519 mean on a Mercury?
P1519 stands for "Intake Camshaft Control / Adjustment Bank 1 Malfunction." P1519 is a manufacturer-specific code most commonly found on VAG vehicles (Volkswagen/Audi), where it indicates a malfunction in the intake camshaft control (variable valve timing / camshaft adjustment) on Bank 1. The engine control module has detected that the intake camshaft cannot be adjusted to the commanded position, meaning the VVT system on that bank is not responding correctly. On some other makes the same code number is used differently (e.g., BMW: inlet camshaft end-position plausibility; Mercedes-Benz: camshaft position control mechanical fault; some others: intake manifold runner control stuck closed), so the exact meaning can vary by manufacturer. On Mercury it is documented across 1 model: Cougar.
What are the most common causes of P1519?
The most common causes of P1519 are: Faulty or clogged camshaft adjuster (VVT) solenoid on Bank 1 (resistance spec roughly 10-18 ohms), Low or dirty oil / sludge restricting the camshaft adjuster oil flow, Wiring or connector fault to the camshaft adjustment valve (loose/corroded connector), Failed or stretched timing chain, worn tensioner, or camshaft phaser/adjuster unit, Faulty camshaft or crankshaft position sensor causing timing correlation error, Engine control module fault or incorrect camshaft timing alignment. The specific cause varies by vehicle.
How much does it cost to fix P1519 on a Mercury?
Published repair estimates on Mercury range from $120 to $600 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.