EGR Temperature Sensor B Circuit High

Where it lives

For P041D, the sensor sits on the circuit this code reports. The description of P041D reports a fault at the sensor.

Check these first

• Failed EGR temperature sensor B
• Short to voltage in the EGR temperature sensor B wiring
• Corrosion or damage at the EGR temperature sensor B connector
• Blockage in the EGR passage holding sensor B high
• Wiring fault between the ECM and EGR temperature sensor B

What to do next

1. Inspect the EGR temperature sensor B connector and wiring
2. Test the EGR temperature sensor B circuit for a short to voltage
3. Read EGR temperature sensor B live data against spec
4. Check the EGR passage for blockages and clean it
5. Replace EGR temperature sensor B if the signal stays high
6. Clear the code and retest

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