DTC codes / P24xx · Auxiliary emission controls / P2483
P2483 indicates that the powertrain control module has detected an out-of-range or performance fault in the exhaust gas temperature sensor circuit for bank 1 sensor 5, which is typically a post-catalyst or downstream sensor on that bank. The computer compares the sensor signal against expected values for the current operating conditions and flags the code when the voltage or temperature reading falls outside the calibrated range or fails a rationality check.
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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