P219A on Nissan
Bank 1 Air/Fuel Ratio Imbalance
P219A on Nissan vehicles indicates bank 1 air/fuel ratio imbalance. Au7o has documented this code across 1 Nissan model — most commonly on Rogue. This code means the engine computer detected an air/fuel ratio imbalance among the cylinders on Bank 1, the bank containing cylinder #1. The computer compares oxygen sensor data with small variations in crankshaft speed to detect when individual cylinders are running noticeably richer or leaner than the others. An imbalance points to one or more cylinders not receiving the correct fuel or air. It can cause rough running, hesitation, and increased emissions, and over time may lead to a misfire if left unaddressed. Typical repair costs on Nissan range from $200 to $1,200, depending on the specific model and root cause.
Common Causes of P219A
- •Dirty or leaking fuel injector on one cylinder
- •Vacuum leak affecting specific cylinders
- •Faulty air/fuel ratio or oxygen sensor
- •Low or uneven fuel pressure
- •Intake manifold gasket leak
- •Carbon-fouled or weak spark on a cylinder
- •Uneven compression among cylinders
P219A on Nissan by Model
Nissan Rogue(1 issue)
- 1.5L VC-Turbo Engine Oil Smell, Rough Running, and Check Engine Light from PCV / Crankcase Ventilation Faults2022-2025
On 2022+ Rogues equipped with the 1.5L KR15DDT variable-compression turbo engine, owners have reported rough idle, oil odor, hesitation, and check-engine lights tied to crankcase ventilation or related air-fuel control issues. These complaints are distinct from outright transmission concerns and appear in owner forums and complaint databases as the newer engine accumulated mileage. In some cases, the issue presents as drivability problems without obvious external leaks.
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View P219A across all makes →Frequently Asked Questions
What does P219A mean on Nissan?▼
P219A stands for "Bank 1 Air/Fuel Ratio Imbalance." This code means the engine computer detected an air/fuel ratio imbalance among the cylinders on Bank 1, the bank containing cylinder #1. The computer compares oxygen sensor data with small variations in crankshaft speed to detect when individual cylinders are running noticeably richer or leaner than the others. An imbalance points to one or more cylinders not receiving the correct fuel or air. It can cause rough running, hesitation, and increased emissions, and over time may lead to a misfire if left unaddressed. On Nissan specifically, this code is documented across 1 model.
What causes P219A on Nissan vehicles?▼
Common causes on Nissan: Dirty or leaking fuel injector on one cylinder, Vacuum leak affecting specific cylinders, Faulty air/fuel ratio or oxygen sensor, Low or uneven fuel pressure, Intake manifold gasket leak. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P219A on a Nissan?▼
Repair costs on Nissan range from $200 to $1,200, depending on the specific model and root cause.
Which Nissan models have P219A documented?▼
Au7o has documented P219A on 1 Nissan model: Rogue.