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 there's a problem with a sensor in the car that measures how hot the exhaust gases are. It's not working all the time, which can confuse the car's computer.
The code P2085 indicates that the car's computer has detected an intermittent issue with the exhaust gas temperature sensor located on Bank 1, Sensor 2.
The exhaust gas temperature sensor is responsible for measuring the temperature of the exhaust gases leaving the engine. This information is used by the engine control module (ECM) to optimize fuel delivery and emissions control. An intermittent circuit issue means that the sensor is not providing a consistent signal to the ECM, which can affect engine performance and emissions.
• Check Engine Light illuminated
• Poor fuel economy
• Reduced engine performance
• Faulty exhaust gas temperature sensor
• Wiring issues such as damaged wires or poor connections
• Corroded or loose electrical connectors
Bank 1: The side of the engine with cylinder number 1.
Sensor 2: Refers to the second sensor in the exhaust system, typically after the catalytic converter.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage or corrosion
• Test the exhaust gas temperature sensor for proper operation
• Replace the faulty exhaust gas temperature sensor
• Repair or replace damaged wiring
• Clean and secure electrical connectors
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect and maintain exhaust system components
• Ensure all electrical connections are secure
• Use quality replacement parts
Sensor Issue
• Do not ignore the Check Engine Light
• Have the vehicle inspected by a professional if unsure
• Address the issue promptly to avoid further damage
Sensor issues may be covered under emissions warranty. Check with the vehicle manufacturer.
This code has been more common in vehicles with high mileage or those that frequently operate under heavy load conditions.
Moderate – It should be addressed soon to prevent potential damage to the engine or increased emissions.
Ignoring emissions-related codes can lead to failing emissions tests and may result in fines or penalties in some regions.
• Engine at operating temperature
• Vehicle running with varying loads
The exhaust gas temperature sensor is typically located in the exhaust system, downstream of the catalytic converter on Bank 1.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to poor engine performance, increased emissions, and potential damage to the catalytic converter.
Q: Can I drive my car with this code?
A: While the car may still be drivable, it's best to address the issue soon to avoid further problems.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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.