P219B on 2016-2018 Honda Pilot — Bank 2 Air/Fuel Ratio Imbalance
1 vehicles · 1 makes
How to diagnose and fix P219B: most-reported vehicles
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Honda Pilot · 2016–2018
2016-2018 Pilots suffer from debris in direct-injection fuel system causing internal wear or clogging inside injectors. Causes misfire codes (P0300-P0306), catalyst efficiency codes (P219A/B, P0420/P0430), rough idle, and stalling. TSB 20-100 addresses this defect. Honda extended warranty to 10 years/150,000 miles for 2016-2017 models.
Common Symptoms
- Check engine light with misfire codes (P0300-P0306)
- Catalyst efficiency codes (P0420, P0430, P219A, P219B)
- Rough idle or engine stumbling
- Engine stalling at stops
- Poor fuel economy
- Fuel smell at idle
- Loss of power under acceleration
How to Fix
Visit Honda dealer for diagnosis using TSB 20-100. For vehicles with these codes, Honda will replace fuel injectors and catalytic converters under extended warranty (10 years/150,000 miles for 2016-2017). PCM software update also available. Keep documentation of all misfires and check engine lights to support warranty claim.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Honda 16010-RLV-315 six-piece fuel-injector setOEMHonda 16010-RLV-315
Retail fallback only after Honda warranty/VIN review and diagnosis confirm the injector branch Fitment/availability: 2016-2018 U.S.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipHonda extended warranty to 10 years/150,000 miles for 2016-2017 models with these codes - document all issues
- TipIf dealer denies warranty claim, reference TSB 20-100 specifically and escalate to Honda corporate
- WarningDo not ignore misfire codes - continued driving can damage catalytic converters ($1,500-$3,500 to replace)
- WarningThese codes often misdiagnosed as VCM issues - verify with dealer using TSB 20-100 for correct diagnosis
Sources for this issue (2)
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P219B 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 P219B mean?
P219B stands for "Bank 2 Air/Fuel Ratio Imbalance." Generic SAE J2012 code. The PCM continuously compares fuel-trim behavior between cylinder banks. P219B sets when it detects that the air/fuel mixture on Bank 2 (the cylinder bank that does NOT contain cylinder #1 on a V-type engine) is imbalanced relative to Bank 1, meaning the module can no longer balance the mixture equally across both banks. It is an 'imbalance' fault (combustion still occurs) rather than a misfire.
What are the most common causes of P219B?
The most common causes of P219B are: Dirty, clogged, or leaking fuel injector on a Bank 2 cylinder, Intake/vacuum leak local to Bank 2 (manifold gasket, cracked hose), Faulty or lazy upstream oxygen / air-fuel ratio sensor on Bank 2, Contaminated or failing mass airflow (MAF) sensor, Low or inconsistent fuel pressure (weak pump or regulator), Weak ignition coil or fouled spark plug on a Bank 2 cylinder, Low compression / mechanical issue on a Bank 2 cylinder. The specific cause varies by vehicle.
How much does it cost to fix P219B?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by P219B?
Au7o has documented P219B across 1 vehicle models from 1 manufacturers: Honda.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.