Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means that the car's engine is getting too much fuel and not enough air on one side when it's just sitting still.
The engine control module (ECM) detects that the air-fuel mixture is too rich (too much fuel) at idle for the second bank of cylinders.
Code P2190 indicates that the ECM has detected an excessively rich air-fuel mixture in Bank 2 at idle. This means there is more fuel than necessary compared to the air entering the engine. This imbalance can lead to inefficient combustion and increased emissions.
• Check Engine Light is on
• Poor fuel economy
• Rough idle
• Faulty oxygen sensor
• Leaking fuel injector
• Mass air flow sensor malfunction
ECM: Engine Control Module
Oxygen Sensor: A device that measures the oxygen level in the exhaust gases
• Scan the vehicle for additional codes.
• Inspect the oxygen sensors for proper operation.
• Check for fuel injector leaks or malfunctions.
• Replace faulty oxygen sensor.
• Repair or replace leaking fuel injector.
• Clean or replace mass air flow sensor.
• OBD-II scanner
• Multimeter
• Fuel pressure gauge
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and replace air filters.
• Use quality fuel to prevent injector clogging.
• Perform routine maintenance on oxygen sensors.
Engine Performance
• Avoid driving with a persistent check engine light.
• Monitor fuel economy and address issues promptly.
Check with your vehicle manufacturer for specific warranty coverage related to emissions and sensors.
This code has been associated with vehicles that have high mileage or poor maintenance history, particularly affecting the fuel and air intake systems.
Moderate – It is advised to address this issue soon to prevent further engine performance problems.
Driving with a rich fuel mixture can increase emissions, which may not comply with local environmental regulations.
• Engine at idle
• Normal operating temperature
Bank 2 refers to the side of the engine opposite to Bank 1, typically on V-type engines.
Q: What does Bank 2 mean?
A: Bank 2 refers to the side of the engine opposite to Bank 1, usually on V6, V8, or V12 engines.
Q: Can I drive with code P2190?
A: While you may be able to drive, it's not recommended as it can lead to poor performance and increased emissions.
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Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant when the code or supporting diagnostics point toward upstream or downstream oxygen-sensor faults.
This code family often involves upstream or downstream oxygen-sensor diagnosis.
Verify exact sensor position and vehicle fitment before buying.
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Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.