[SOLVED] P123A Code: Baro Sensor / Tc/Sc Boost Pressure Sensor ‘a’ Correlation – Fix Now!

The automobile fault code P123A indicates a problem with the Barometric Pressure (BARO) Sensor or the Supercharger (SC) Boost Pressure Sensor ‘A’. The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light. The cause could be a faulty sensor, open or shorted sensor harness, or poor electrical connection in the sensor circuit.

To fix the issue, you should visually inspect the wiring harness and connectors for any damage.

Look for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0 hour. It is important to address this problem promptly to prevent further damage to the vehicle.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p123a fault code.

  • The symptoms of the automobile fault code P123A include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p123a can be caused by a faulty Barometric Pressure (BARO) Sensor, open or shorted sensor harness, poor electrical connection in the sensor circuit, or a faulty Supercharger (SC) Boost Pressure Sensor ‘A’.

  • The causes of the automobile fault code p123a include: a faulty Barometric Pressure (BARO) Sensor, an open or shorted Barometric Pressure (BARO) Sensor harness, a poor electrical connection in the Barometric Pressure (BARO) Sensor circuit, a faulty Supercharger (SC) Boost Pressure Sensor ‘A’, an open or shorted Supercharger (SC) Boost Pressure Sensor ‘A’ harness, and a poor electrical connection in the Supercharger (SC) Boost Pressure Sensor ‘A’ circuit.

To fix the automobile fault code p123a, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p123a, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The automobile fault code P123A can be diagnosed and fixed within an estimated repair time of 1.0 hour. Auto repair shops typically charge between $75 and $150 per hour for such repairs.

The P123A fault code is related to the Barometric Pressure (BARO) Sensor and Turbocharger (TC) Supercharger (SC) Boost Pressure Sensor ‘A’.

The Powertrain Control Module (PCM) monitors these sensors and sets the OBDII code when they are not functioning according to factory specifications. This code indicates a correlation issue between the BARO sensor and the TCSC Boost Pressure Sensor ‘A’. It is important to address this fault code promptly to ensure optimal performance and avoid potential damage to the vehicle.

What are the possible causes of the automobile fault code P123A?

If you’re seeing the engine light on or the service engine soon warning light, the fault code P123A could be the culprit. This code can be caused by a faulty barometric pressure (BARO) sensor, an open or shorted BARO sensor harness, a poor electrical connection in the BARO sensor circuit, a faulty supercharger (SC) boost pressure sensor ‘A’, an open or shorted SC boost pressure sensor ‘A’ harness, or a poor electrical connection in the SC boost pressure sensor ‘A’ circuit. To fix the issue, check the possible causes mentioned above and visually inspect the wiring harness and connectors. Look out for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to fix the P123A fault code?

If you’re dealing with the P123A fault code and your engine light is on, it’s time to take action. The cause could be a faulty Barometric Pressure (BARO) Sensor, an open or shorted BARO Sensor harness, or a poor electrical connection in the BARO Sensor circuit. It could also be due to a faulty Supercharger (SC) Boost Pressure Sensor ‘A’, an open or shorted SC Boost Pressure Sensor ‘A’ harness, or a poor electrical connection in the SC Boost Pressure Sensor ‘A’ circuit. To fix this, visually inspect the wiring harness and connectors for any damage or issues. Look out for broken, bent, pushed out, or corroded connector pins. Don’t delay, check for these possible causes now!

What should I look for when checking for damaged components and connector’s pins to resolve the P123A fault code?

If you’re dealing with the P123A fault code, there are a few things you should check for. Start by visually inspecting the wiring harness and connectors related to the issue. Look out for any damaged components and pay attention to broken, bent, pushed out, or corroded connector’s pins. These could be the culprits behind the problem. By thoroughly examining these areas, you’ll be on your way to resolving the issue and getting that engine light turned off.

p123a error fault code explained

If your engine light is on and you’re seeing the P123A fault code, it could be due to a faulty Barometric Pressure (BARO) Sensor or an issue with the Supercharger (SC) Boost Pressure Sensor ‘A’.

To fix it, visually inspect the wiring harness and connectors for any damage, and check for broken or corroded pins.

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