DTC codes / P24xx · Auxiliary emission controls / P2471
P2471 means the powertrain control module (PCM) has detected an out-of-range or performance problem with the exhaust gas temperature (EGT) sensor circuit for bank 1 sensor 3. The PCM compares the sensor's voltage or resistance signal against expected values for the current engine operating conditions and flags the code when the signal stays outside the acceptable window for too long.
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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