DTC codes / P24xx · Auxiliary emission controls / P246E
P246E indicates that the powertrain control module has detected an abnormal signal from the exhaust gas temperature sensor located after the diesel particulate filter on bank 1, specifically sensor 4. The computer compares this sensor's reading to expected values and other sensor inputs, and when the voltage or resistance falls outside the calibrated range, it stores this code and illuminates the warning light.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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