OBD
P0486
EGR Sensor B Circuit
What it means
P0486 means EGR Sensor B Circuit.
Where it lives
For P0486, the circuit described runs through the sensor. The description of P0486 reports a fault at the sensor.
Check these first
- A failed EGR sensor B
- An open or shorted EGR sensor B wire
- Corrosion at the EGR sensor B connector
- A stuck EGR valve holding the reading off
What to do next
- Read the EGR sensor B signal on a scan tool
- Inspect the EGR sensor B connector and wiring
- Compare the sensor B signal against the other EGR sensors
- Replace the EGR sensor B if its signal does not change
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.