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DTC codes / P22xx · Fuel and air metering (injector circuits) / P22BA
P22BA indicates that the powertrain control module has detected an abnormally high current on the positive control circuit for the downstream oxygen sensor on bank 2, which is the side of the engine that does not contain cylinder number one. The sensor's heater or signal circuit is drawing more current than expected, often due to a short to voltage or a failed sensor element.
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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