OBD-II Code P219D: What It Is, Symptoms, Causes & How to Fix It with iCarsoft CR Ultra P
If your engine misfires, wastes fuel, or triggers the check engine light with OBD-II Code P219D—defined as “Air-Fuel Ratio Imbalance in Cylinder 2”—you’re facing a targeted combustion issue that disrupts performance. The ideal air-fuel ratio (14.7:1 for gasoline engines) is critical for efficient power and low emissions, but an imbalance in Cylinder 2 throws off engine harmony, risking long-term damage to spark plugs or catalytic converters. But you don’t need to overpay for dealer diagnostics: this guide breaks down everything you need to know about P219D, plus why the iCarsoft CR Ultra P diagnostic tool is the DIYer’s must-have to detect, troubleshoot, and clear this error code for good.
What Is OBD-II Code P219D?
OBD-II codes are universal alerts from your vehicle’s Engine Control Module (ECM) when powertrain systems malfunction. Specifically, P219D indicates the air-fuel mixture in Cylinder 2 is imbalanced—either too rich (excess fuel) or too lean (excess air) compared to the ECM’s target ratio.
Cylinder 2 is a specific combustion chamber (location varies by engine layout: inline engines number cylinders front to back, V-shaped engines split into banks). The ECM relies on oxygen (O2) sensors, fuel injectors, and mass airflow (MAF) sensors to regulate fuel delivery to each cylinder; when Cylinder 2’s mixture deviates significantly from normal, P219D is triggered. This imbalance causes misfires, reduces efficiency, and can overheat critical components over time.
Common Symptoms of P219D
Watch for these telltale signs that P219D is affecting Cylinder 2:
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Illuminated Check Engine Light (MIL) – solid or persistent
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Engine misfires (especially at idle or low speeds)
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Rough idling or noticeable vibration from the engine bay
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Reduced power and sluggish acceleration (Cylinder 2 isn’t contributing fully)
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Increased fuel consumption (imbalanced mixture wastes fuel)
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Strong fuel odor (rich mixture) or popping noises (lean mixture) from the exhaust
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Black smoke (rich) or white/gray smoke (lean) from the tailpipe
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Failed emissions tests (unburned fuel or incomplete combustion skews readings)
Top Causes of P219D
Pinpointing the root cause of P219D (specific to Cylinder 2) is key to targeted repairs—and a professional diagnostic tool simplifies this. Common triggers include:
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Faulty or clogged fuel injector (Cylinder 2): Delivers too little/too much fuel
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Malfunctioning oxygen (O2) sensor (upstream, near Cylinder 2): Sends incorrect ratio data
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Intake air leak (near Cylinder 2’s intake valve): Unmeasured air disrupts the mixture
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Damaged spark plug or ignition coil (Cylinder 2): Poor combustion leads to ratio imbalance
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Mass Airflow (MAF) sensor contamination: Miscalculates total incoming air volume
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Fuel pressure issues: Faulty pump or regulator – inconsistent fuel delivery to Cylinder 2
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Vacuum leaks: Damaged hoses or gaskets – disrupts air intake for Cylinder 2
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Worn valve seals or rings (Cylinder 2): Allows oil into the combustion chamber
Why the iCarsoft CR Ultra P Is Ideal for P219D
Not all OBD scanners can isolate cylinder-specific issues like P219D—many only detect general air-fuel imbalances. The iCarsoft CR Ultra P is a professional-grade tool designed to pinpoint problems at the cylinder level with precision. Here’s why it stands out:
Cylinder-Specific Diagnostics
Reads real-time data for Cylinder 2, including O2 sensor voltage, fuel injector pulse width, and ignition timing—identifying if the issue is fuel, air, or ignition-related.
One-Click Code Clearing
After fixing Cylinder 2’s imbalance, reset the Check Engine Light and clear P219D in seconds—no guesswork.
Sensor & Injector Testing
Offers fuel injector performance checks and O2 sensor response tests—critical for resolving P219D’s root cause.
Wide Vehicle Compatibility
Works with most OBD-II compliant cars, trucks, SUVs, and vans (1996+ US models, 2000+ EU/Asian models) from Ford, Chevrolet, Toyota, Honda, BMW, Mercedes-Benz, and more.
Live Data Streaming
Monitors Cylinder 2’s combustion data, air-fuel ratio, and sensor outputs in real time to verify your repair worked.
User-Friendly Design
Plug-and-play operation, large LCD screen, and step-by-step prompts—no advanced mechanical skills required.
Durable & Reliable
Built with rugged materials to withstand garage use, backed by iCarsoft’s customer support and warranty.
Real Customer Reviews: iCarsoft CR Ultra P for P219D
“My 2017 Honda Civic threw P219D and misfired so bad it shook. The dealer quoted $300 for diagnostics plus $600 for a new injector and coil! Bought the iCarsoft CR Ultra P, scanned it in 2 minutes, and it showed Cylinder 2’s injector was clogged. Cleaned it with injector cleaner for $12, cleared the code, and the misfire was gone. Saved $888—this tool is brilliant!”
— Emily R., California
“I’m a DIYer with a Ford F-150 that had P219D. Cheap scanners only said ‘air-fuel imbalance’—no cylinder info. The iCarsoft CR Ultra P pointed directly to Cylinder 2’s ignition coil. Replaced it for $45, cleared the code, and my truck runs smoother than ever. Super easy to use, even for someone new to cylinder-specific issues!”
— Derek T., Texas
“Had P219D on my Volkswagen Passat for weeks—dealer wanted $900 to replace all injectors. The iCarsoft CR Ultra P’s live data showed Cylinder 2’s O2 sensor was faulty, not the injectors. Replaced the sensor for $70, cleared the code, and fuel efficiency is back. This tool saved me from a huge scam—highly recommend!”
— Sophia K., Florida
FAQ: Everything You Need to Know About P219D & iCarsoft CR Ultra P
What exactly does OBD-II Code P219D mean?
P219D indicates an air-fuel ratio imbalance in Cylinder 2—either too rich or too lean, disrupting combustion and engine performance.
Is it safe to drive with P219D?
Short-term driving is possible, but long-term use can damage Cylinder 2’s spark plug, ignition coil, or the catalytic converter. Fix it promptly to avoid costly repairs.
Can I clear P219D without a diagnostic tool?
Disconnecting the battery resets the Check Engine Light temporarily, but the imbalance remains. A tool like the iCarsoft CR Ultra P is needed to identify Cylinder 2’s specific issue.
Will the iCarsoft CR Ultra P work with my vehicle?
It’s compatible with most OBD-II compliant vehicles (1996+ US, 2000+ EU/Asian) including cars, trucks, SUVs, and vans. Check the product page for full brand/model coverage.
Do I need technical skills to use it?
No! It’s plug-and-play: connect to your vehicle’s OBD-II port (under the dashboard), turn on the ignition, and follow on-screen prompts to scan for P219D.
Will the iCarsoft CR Ultra P clear P219D permanently?
Yes—if you repair the root cause (e.g., clean/replace injector, fix O2 sensor). The tool resets the ECM, so the code won’t return if Cylinder 2’s ratio is balanced.
How much money can I save with this tool?
Professional diagnostics for P219D cost $100–$350, plus $200–$1,200 in repair fees. The iCarsoft CR Ultra P pays for itself after one use.
Where can I buy the iCarsoft CR Ultra P?
Purchase directly from the official iCarsoft website for genuine quality, worldwide shipping, and a 1-year warranty.
Final Thoughts: Don’t Let P219D Ruin Cylinder 2’s Performance
OBD-II Code P219D is a targeted but fixable issue—if you have the right tool to diagnose it. The iCarsoft CR Ultra P takes the guesswork out of identifying and clearing Cylinder 2’s air-fuel imbalance, saving you time, money, and the stress of misfires or poor efficiency. Whether you’re a seasoned DIY enthusiast, daily commuter, or budget-conscious driver, this tool is a must-have for protecting your engine and restoring smooth, balanced combustion.
Ready to fix P219D, stop misfires, and boost fuel efficiency? Grab the iCarsoft CR Ultra P today and take control of your vehicle’s Cylinder 2 health!
Buy iCarsoft CR Ultra P Now →
Disclaimer: This guide is for informational purposes only. Always consult your vehicle’s owner’s manual or a certified mechanic before major repairs. iCarsoft is not responsible for damage from improper tool use.
