Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor that checks the temperature of the exhaust gases in your car. It's like a thermometer that's not working right.
The EGR Temperature Sensor B is responsible for monitoring the temperature of the exhaust gases being recirculated back into the engine. If the sensor's readings are outside the expected range, the engine control module (ECM) triggers this code.
The P041B code is set when the ECM detects a voltage or resistance reading from the EGR Temperature Sensor B that is outside the normal range. This can indicate a problem with the sensor itself, the wiring, or the ECM.
• Check Engine Light illuminated
• Poor engine performance
• Increased emissions
• Faulty EGR Temperature Sensor B
• Wiring issues or poor connections
• Faulty ECM
EGR: Exhaust Gas Recirculation
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Visually inspect the EGR temperature sensor and its wiring.
• Test the sensor's resistance and voltage readings.
• Replace the EGR Temperature Sensor B.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Ensure proper EGR system cleaning
• Inspect sensor connections periodically
Sensor Issue
• Get the code checked by a professional mechanic.
• Avoid driving long distances until the issue is resolved.
Repairs may be covered under the vehicle's emissions warranty.
This code has been commonly associated with EGR system issues in vehicles with higher mileage.
Moderate – It's important to address this issue soon to prevent further engine performance problems.
Ignoring emissions-related issues can lead to failing emissions tests and potential fines.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The EGR Temperature Sensor B is typically located near the EGR valve on the engine.
Q: Can I drive with a P041B code?
A: It's not recommended to drive for long periods as it may affect engine performance and emissions.
Q: How do I reset the P041B code?
A: After fixing the issue, you can clear the code with an OBD-II scanner.
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