Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the heater in a sensor that helps monitor pollution. It's like when a thermometer's battery is low and it can't give a good reading.
The NOx sensor is used to measure nitrogen oxide levels in the exhaust. It needs to be heated to work properly, and this code indicates that the heater circuit for the sensor on bank 2 is not working well.
P2219 indicates that the Engine Control Module (ECM) has detected a low voltage or resistance in the heater circuit of the NOx sensor located on bank 2. This can affect the sensor's ability to accurately measure NOx levels, potentially leading to increased emissions.
• Check Engine Light is on
• Decreased fuel efficiency
• Possible increase in emissions
• Faulty NOx sensor
• Wiring issues in the sensor circuit
• Blown fuse for the sensor heater
NOx: Nitrogen Oxides, pollutants produced during combustion.
Bank 2: The side of the engine opposite to bank 1, typically the side without cylinder 1.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the NOx sensor on bank 2.
• Check the fuse related to the NOx sensor heater circuit.
• Replace the NOx sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the blown fuse if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Camry
• Ford F-150
• Chevrolet Silverado
• Regularly inspect and maintain exhaust system components.
• Ensure sensors are clean and free from damage.
• Check wiring and connectors for signs of wear.
Sensor Issue
• Have the vehicle inspected by a professional to avoid further damage.
• Address the issue promptly to maintain fuel efficiency.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been more common with vehicles that have higher mileage or have been exposed to harsh environmental conditions.
Moderate – It should be addressed soon to prevent increased emissions and possible damage to the catalytic converter.
Driving with this code may lead to higher emissions, which could be illegal in areas with strict emission regulations.
• Engine at operating temperature
• Vehicle on a level surface
The NOx sensor for bank 2 is typically located in the exhaust system after the catalytic converter on the side of the engine with the second set of cylinders.
Q: Can I drive with a P2219 code?
A: While you can drive with this code, it's best to have it fixed soon to prevent increased emissions and potential damage.
Q: How do I know if my NOx sensor is bad?
A: Symptoms include a Check Engine Light, decreased fuel efficiency, and possible increased emissions.
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Universal · Digital multimeter
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
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.