What are the common causes of P041E?

An intermittent EGR temperature sensor B. A loose sensor B connector. A chafed sensor B wire that rubs with engine movement. Moisture in the sensor B connector. A clogged EGR cooler causing swings.

Wiggle test the sensor B harness while watching the signal. Inspect the sensor B connector for moisture. Check the sensor B wire for chafing. Clean the EGR cooler if it is clogged. Replace sensor B if the dropouts continue. Clear the code and retest.

P041E

EGR Temperature Sensor B Circuit Intermittent/Erratic

System: Auxiliary emission controls (P code)
Lamp: Check Engine Light
Category: Powertrain - Auxiliary Emissions Controls

What it means

P041E means EGR Temperature Sensor B Circuit Intermittent/Erratic.

Where it lives

For P041E, the circuit described runs through the sensor. The description of P041E reports a fault at the sensor.

Check these first

An intermittent EGR temperature sensor B
A loose sensor B connector
A chafed sensor B wire that rubs with engine movement
Moisture in the sensor B connector
A clogged EGR cooler causing swings

What to do next

Wiggle test the sensor B harness while watching the signal
Inspect the sensor B connector for moisture
Check the sensor B wire for chafing
Clean the EGR cooler if it is clogged
Replace sensor B if the dropouts continue
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.