Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that a sensor measuring how hot the exhaust is, isn't working right. It's like a thermometer for the car's exhaust, and it's not showing the right temperature.
This code indicates that the exhaust gas temperature sensor on bank 1, sensor 4, is reporting a voltage that is higher than expected. This could mean the sensor is faulty or there is an issue with the wiring.
The P2471 code is triggered when the Powertrain Control Module (PCM) detects a high voltage signal from the exhaust gas temperature sensor located on bank 1, sensor 4. This sensor is responsible for monitoring the temperature of the exhaust gases to ensure optimal engine performance and emissions control.
• Check Engine Light illuminated
• Possible decrease in fuel efficiency
• Potential increase in emissions
• Faulty exhaust gas temperature sensor
• Wiring issues such as short to power
• Faulty PCM
PCM: Powertrain Control Module, the vehicle's engine management computer.
Bank 1: The side of the engine where cylinder 1 is located.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the exhaust gas temperature sensor with a multimeter.
• Replace the faulty exhaust gas temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Ram 1500
• Regular maintenance checks
• Ensure sensors are clean and free of debris
• Check wiring for wear and tear periodically
Sensor Issue
• Don't ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regularly check and maintain exhaust system components.
Sensor-related repairs may be covered under emissions warranty.
This code has been associated with sensor failures in vehicles with high mileage or poor maintenance history.
Moderate – Should be addressed soon to avoid potential damage or increased emissions.
Driving with a faulty exhaust sensor can lead to increased emissions, which may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle in closed loop mode
The exhaust gas temperature sensor is located in the exhaust system, typically near the catalytic converter on bank 1.
Q: Can I drive with a P2471 code?
A: It's possible to drive short distances, but it's best to fix the issue soon to avoid potential damage or increased emissions.
Q: How do I clear a P2471 code?
A: After repairing the issue, use an OBD-II scanner to clear the code from the vehicle's computer.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
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.
View on Amazon
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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
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.