Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the P123A code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The Powertrain Control Module (PCM) monitors the Barometric Pressure (BARO) Sensor and Turbocharger (TC) / Supercharger (SC) Boost Pressure Sensor 'A'. The PCM sets the OBDII code when the Barometric Pressure (BARO) Sensor and Turbocharger (TC) / Supercharger (SC) Boost Pressure Sensor 'A' is not to factory specifications.
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