Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor in your car that helps control pollution. It's not working right, and it's on the side of the engine where the second set of cylinders is located.
The P2222 code indicates an issue with the NOx sensor heater circuit on Bank 2, which affects the sensor's ability to function properly.
The NOx sensor is used to measure the levels of nitrogen oxides in the exhaust system. It has a heater to ensure it operates correctly in various temperatures. A P2222 code is triggered when the sensor's heater circuit on Bank 2 is not performing within the expected range, which can affect emissions control.
• Check Engine Light is on
• Decreased fuel efficiency
• Failed emissions test
• Faulty NOx sensor
• Damaged wiring or connectors
• Failed sensor heater circuit
NOx: Nitrogen Oxides, pollutants produced during combustion.
Bank 2: The side of the engine opposite Bank 1, typically the side without cylinder 1.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the NOx sensor heater circuit for proper operation.
• Replace the faulty NOx sensor.
• Repair or replace damaged wiring or connectors.
• Ensure the sensor heater circuit is functioning correctly.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Volkswagen Jetta
• Audi A4
• BMW 3 Series
• Regularly inspect and maintain exhaust system components.
• Use high-quality fuel to reduce emissions.
• Have regular vehicle check-ups to catch issues early.
Sensor Issue
• Address the issue promptly to avoid further damage.
• Consult with a professional mechanic if unsure about repairs.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
The P2222 code has become more common with the increased use of NOx sensors in modern vehicles to meet stricter emissions standards.
Moderate – It should be addressed soon to ensure proper vehicle performance and emissions compliance.
Driving with a faulty NOx sensor may lead to increased emissions, which could be illegal in some areas.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The NOx sensor for Bank 2 is typically located in the exhaust system on the side of the engine with the second set of cylinders.
Q: Can I drive with a P2222 code?
A: While you can drive with this code, it's best to fix it soon to avoid increased emissions and possible engine performance issues.
Q: How do I know if my NOx sensor is bad?
A: Common signs include a check engine light, poor fuel economy, and failed emissions tests.
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