DTC codes / P24xx · Auxiliary emission controls / P2466
P2466 indicates that the powertrain control module (PCM) has detected an abnormal signal from the exhaust gas temperature (EGT) sensor located after the diesel particulate filter (DPF) on bank 2, sensor 3. The PCM compares this sensor's voltage or resistance to expected values and sets the code when the reading falls outside the acceptable range for a calibrated period.
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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