Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a thermometer that checks how hot the exhaust is. One of these thermometers isn't working right.
The code P2485 indicates that the engine control module (ECM) has detected an open circuit or fault in the exhaust gas temperature sensor circuit for Bank 2, Sensor 5.
The exhaust gas temperature sensor measures the temperature of the exhaust gases exiting the engine. This information is used by the ECM to control emissions and optimize engine performance. An open circuit or fault in this sensor can cause incorrect readings, leading to potential engine performance issues.
• Check Engine Light is on
• Poor fuel economy
• Reduced engine performance
• Faulty exhaust gas temperature sensor
• Damaged wiring or connectors
• ECM issues
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the exhaust gas temperature sensor for proper operation.
• Replace the faulty exhaust gas temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance checks
• Ensure proper sensor installation
• Inspect wiring for wear and tear
Sensor Issue
• Do not ignore the Check Engine Light.
• Get the vehicle inspected by a professional mechanic.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been more prevalent in vehicles with higher mileage or those that frequently tow heavy loads.
Moderate – While the vehicle may still be drivable, it is important to address this issue to prevent further damage.
Driving with a faulty exhaust gas temperature sensor may lead to increased emissions, which can be illegal in some areas.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The exhaust gas temperature sensor is typically located in the exhaust system, near the catalytic converter on Bank 2.
Q: Can I drive with a P2485 code?
A: You may be able to drive for a short period, but it's best to fix the issue to avoid potential engine damage.
Q: How do I reset the Check Engine Light after repairs?
A: Use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes to reset the system.
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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.
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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.