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 the part of the car that helps control pollution. It's like a heater that isn't working right.
The P220E code is triggered when the engine control module (ECM) detects a problem with the NOx sensor heater circuit. This sensor is responsible for measuring nitrogen oxide levels in the exhaust to help reduce emissions.
The NOx sensor heater is used to ensure that the sensor reaches its optimal operating temperature quickly. The ECM monitors the heater circuit for correct operation. If the circuit's performance is outside the expected range, the P220E code is set.
• Check Engine Light is on
• Poor fuel economy
• Failed emissions test
• Faulty NOx sensor
• Damaged wiring or connectors
• Failed ECM
ECM: Engine Control Module
NOx: Nitrogen Oxides
• Scan for codes and freeze frame data
• Inspect wiring and connectors to the NOx sensor
• Test the NOx sensor heater circuit
• Replace the NOx sensor
• Repair or replace damaged wiring/connectors
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Camry
• Ford F-150
• Chevrolet Silverado
• Regular vehicle maintenance
• Check and replace sensors as needed
• Address wiring issues promptly
Sensor Issue
• Have a professional diagnose the issue
• Do not ignore the Check Engine Light
• Regularly maintain your vehicle
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has become more common with the increase in emissions regulations and the use of advanced sensors in vehicles.
Moderate – While the vehicle may still be drivable, it is important to address emissions-related issues to avoid further damage and ensure compliance with emissions standards.
Driving with a malfunctioning emissions system may result in a failed emissions test and could be illegal in some areas.
• Engine at operating temperature
• Vehicle running at idle
The NOx sensor is typically located in the exhaust system, near the catalytic converter.
Q: Can I drive with a P220E code?
A: While you can drive with this code, it's best to fix the issue to avoid emissions problems and potential damage.
Q: How do I reset the Check Engine Light after repairs?
A: Use an OBD-II scanner to clear the codes after repairs are completed.
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Universal · Digital multimeter
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Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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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.