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DTC codes / P22xx · Fuel and air metering (injector circuits) / P2297
P2297 means the powertrain control module (PCM) saw the upstream oxygen sensor on bank 1 report a signal outside its expected range while the engine was decelerating with fuel cut off. During deceleration the exhaust should go lean and the sensor voltage should drop; this code sets when the reading stays too high or otherwise implausible for the conditions.
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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