• Check Engine Light is on
• Poor fuel economy
• Possible engine performance issues
• Faulty exhaust gas temperature sensor
• Damaged or corroded wiring/connectors
• Exhaust leaks affecting sensor readings
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• P2471
• P2473
Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 4
This code means there's a problem with a sensor that measures how hot the exhaust is getting. It's like a thermometer for the car's exhaust, and it's not working right.
The exhaust gas temperature sensor is not sending consistent signals to the engine control module, indicating an intermittent or erratic circuit.
The P2472 code is triggered when the powertrain control module (PCM) detects an intermittent or erratic 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 help manage emissions and protect components like the catalytic converter.
• Use an OBD-II scanner to confirm the code.
• Inspect the exhaust gas temperature sensor and its wiring for damage.
• Test the sensor's resistance and compare it to specifications.
• Replace the faulty exhaust gas temperature sensor.
• Repair or replace damaged wiring/connectors.
• Fix any exhaust leaks.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Tacoma
• Regularly inspect exhaust system components.
• Ensure wiring and connectors are secure and free from corrosion.
• Address exhaust leaks promptly.
Sensor Issue
• Have the vehicle inspected by a professional if you notice performance issues.
• Avoid driving with the Check Engine Light on for extended periods.
Sensor-related issues may be covered under the vehicle's emissions warranty.
This code typically appears in vehicles with higher mileage or those exposed to harsh environmental conditions.
Moderate – It should be addressed soon to prevent potential damage to the catalytic converter.
Driving with a malfunctioning exhaust gas temperature sensor can lead to increased emissions and potential damage to the vehicle.
• Engine at operating temperature
• Vehicle running at various speeds
The sensor is located in the exhaust system on bank 1, typically near the catalytic converter.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to poor engine performance and potential damage to the catalytic converter.
Q: Can I drive my car with this code?
A: It's possible to drive for a short period, but it's recommended to fix the issue soon to avoid further damage.
