[SOLVED] P123B Code: Fixing Baro Sensor / Tc/Sc Boost Pressure Sensor ‘b’ Correlation

The automobile fault code P123B 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 p123b fault code.

  • The symptoms of the automobile fault code P123B include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p123b can be caused by a faulty Barometric Pressure (BARO) Sensor, open or shorted sensor harness, poor electrical connection, or issues with the Supercharger (SC) Boost Pressure Sensor ‘A’.

  • The causes of the automobile fault code p123b 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 p123b, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P123B, 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 factors influencing the cost of diagnosing and fixing the automobile fault code p123b are the estimated repair time and the hourly rate charged by auto repair shops. The estimated repair time for this fault code is 1.0 hour. Auto repair shops typically charge between $75 and $150 per hour for their services.

These factors will determine the overall cost of diagnosing and fixing the p123b fault code.

The P123B fault code is related to the Barometric Pressure (BARO) Sensor and Turbocharger (TC) Supercharger (SC) Boost Pressure Sensor ‘B’.

The Powertrain Control Module (PCM) monitors these sensors and sets the OBDII code when they are not within factory specifications.

This code indicates a correlation issue between the BARO Sensor and the TCSC Boost Pressure Sensor ‘B’.

It is important to address this issue to ensure proper functioning of the vehicle’s engine.

What are the possible causes of the automobile fault code P123B?

If you’re seeing the engine light on or the service engine soon warning light, the fault code P123B might 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 this 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 P123B fault code?

If you’re dealing with the P123B fault code and your engine light is on, it’s time to visually inspect the wiring harness and connectors. This code can be caused by a faulty Barometric Pressure (BARO) Sensor, open or shorted BARO Sensor harness, poor electrical connection in the BARO Sensor circuit, a faulty Supercharger (SC) Boost Pressure Sensor ‘A’, open or shorted Supercharger Boost Pressure Sensor ‘A’ harness, or a poor electrical connection in the Supercharger Boost Pressure Sensor ‘A’ circuit. To fix it, check the possible causes mentioned earlier and visually inspect the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

What should I look for when checking for damaged components and connector’s pins to resolve the P123B fault code?

If you’re dealing with the P123B 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 checking these possible causes, you’ll be one step closer to resolving the issue and getting that engine light turned off.

p123b error fault code explained

If your engine light is on and you’re seeing the P123B 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. Also, check for broken, bent, pushed out, or corroded connector pins.

Take action now to prevent further damage.

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