AutoCodes – Ford – P123A Ford

P123A Ford Code - BARO Sensor / TC/SC Boost Pressure Sensor 'A' Correlation

Quick Answer

The Powertrain Control Module (PCM) monitors the Barometric Pressure (BARO) Sensor and Turbocharger (TC) / Supercharger (SC) Boost Pressure Sensor 'A'. Common causes include Faulty Barometric Pressure (BARO) Sensor, Barometric Pressure (BARO) Sensor harness is open or shorted, Barometric Pressure (BARO) Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P123A Ford indicates BARO Sensor / TC/SC Boost Pressure Sensor 'A' Correlation.
Common causes: Common causes include Faulty Barometric Pressure (BARO) Sensor, Barometric Pressure (BARO) Sensor harness is open or shorted, Barometric Pressure (BARO) Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 8,073

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P123A Ford Description

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.

OBDII Code P123A Ford - BARO Sensor / TC/SC Boost Pressure Sensor 'A' Correlation - AutoCodes.com — P123A Ford Code - BARO Sensor / TC/SC Boost Pressure Sensor 'A' Correlation

What does this mean?

What are the Possible Causes of the DTC P123A Ford?

Faulty Barometric Pressure (BARO) Sensor
Barometric Pressure (BARO) Sensor harness is open or shorted
Barometric Pressure (BARO) Sensor circuit poor electrical connection
Faulty Supercharger (SC) Boost Pressure Sensor 'A'
Supercharger (SC) Boost Pressure Sensor 'A' harness is open or shorted
Supercharger (SC) Boost Pressure Sensor 'A' circuit poor electrical connection

How to Fix the DTC P123A Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P123A Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

Get the P123A Ford code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P123A Ford Code

1. What are the common symptoms of OBDII code P123A in a Ford?

Symptoms may include reduced engine power, poor acceleration, rough idling, and possible stalling.

2. What does the OBDII code P123A Ford indicate?

This code indicates a correlation error between the Barometric (BARO) sensor and the Turbocharger/Supercharger Boost Pressure Sensor 'A'.

3. What are the possible causes of OBDII code P123A in a Ford?

Possible causes include a faulty BARO sensor, malfunctioning boost pressure sensor, wiring issues, or a problem with the engine control module (ECM).

4. How can I diagnose OBDII code P123A in my Ford?

Diagnosis involves using a scan tool to read the code, checking the sensor readings, inspecting the wiring for damage, and testing the sensor components for proper functionality.

5. Can I continue driving with OBDII code P123A present in my Ford?

It is not recommended to continue driving with this code as it can lead to further engine damage and performance issues. Address the problem promptly.

6. How can I repair OBDII code P123A in my Ford?

Repair may involve replacing the BARO sensor, Turbocharger/Supercharger Boost Pressure Sensor 'A', repairing damaged wiring, or reprogramming the ECM.

7. Are there any DIY tips for fixing OBDII code P123A in a Ford?

While some basic troubleshooting can be done, it is advisable to seek professional help for diagnosing and repairing this code due to the complexity of the sensors involved.

8. Will resetting the fault codes clear OBDII code P123A in my Ford?

Resetting the fault codes may temporarily clear the code, but it will likely return if the underlying issue is not addressed and repaired.

9. How much does it cost to fix OBDII code P123A in a Ford?

The cost of fixing this code can vary depending on the exact cause of the issue, the parts needed for repair, and labor costs. It is recommended to get a diagnosis from a trusted mechanic for an accurate estimate.

10. Can a faulty BARO sensor cause OBDII code P123A in a Ford?

Yes, a faulty BARO sensor can contribute to the triggering of OBDII code P123A in a Ford due to the correlation error with the Turbocharger/Supercharger Boost Pressure Sensor 'A'.