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 a sensor in the car that checks how hot the exhaust is, isn't working right. It's like a thermometer that isn't giving the right temperature.
The exhaust gas temperature sensor monitors the temperature of the exhaust gases and sends this information to the engine control module (ECM). If the signal from the sensor is outside the expected range, the ECM triggers this code.
The P2488 code indicates that the exhaust gas temperature sensor for Bank 2 Sensor 5 is sending a signal that is out of the expected range. This could be due to a sensor malfunction, wiring issues, or a problem with the ECM itself.
• Check Engine Light illuminated
• Poor engine performance
• Increased emissions
• Faulty exhaust gas temperature sensor
• Wiring issues such as shorts or open circuits
• Faulty engine control module (ECM)
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to verify 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 or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regular maintenance checks
• Ensure proper exhaust system function
• Avoid harsh driving conditions
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regularly maintain the exhaust system.
Check with your vehicle manufacturer for specific warranty coverage on sensors.
This code has been associated with faulty sensors or wiring issues in vehicles with advanced emission control systems.
Moderate – It is advisable to address this issue soon to avoid potential engine damage.
Driving with a malfunctioning sensor can lead to increased emissions, which may not comply with environmental regulations.
• Engine at operating temperature
• Vehicle in a safe and secure location
The exhaust gas temperature sensor is located in the exhaust system, typically near the catalytic converter.
Q: Can I drive with a P2488 code?
A: While the car may still run, it's not recommended as it can lead to further damage and increased emissions.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections of the exhaust system can help prevent sensor issues.
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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.