AutoCodes – Toyota – B1423 Toyota

B1423 Toyota Code - Pressure Sensor Circuit

Quick Answer

This Diagnostic Trouble Code (DTC) is output when the refrigerant pressure is either extremely low (0.19 MPa [2.0 kgf/cm2, 28 psi] or less) or extremely high (3.14 MPa [32.0 kgf/cm2, 455 psi] or more). Common causes include Faulty Pressure Sensor, Pressure Sensor harness is open or shorted, Pressure 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: B1423 Toyota indicates Pressure Sensor Circuit.
Common causes: Common causes include Faulty Pressure Sensor, Pressure Sensor harness is open or shorted, Pressure 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 34,192

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 Apr 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1423 Toyota Description

This Diagnostic Trouble Code (DTC) is output when the refrigerant pressure is either extremely low (0.19 MPa [2.0 kgf/cm2, 28 psi] or less) or extremely high (3.14 MPa [32.0 kgf/cm2, 455 psi] or more). The air conditioning pressure sensor, which is installed on the pipe of the high-pressure side, detects the refrigerant pressure and sends refrigerant pressure signals to the air conditioning amplifier. The air conditioning amplifier determines the pressure from the signals in accordance with the sensor characteristics and controls the compressor accordingly.

OBDII Code B1423 Toyota - Pressure Sensor Circuit - AutoCodes.com — B1423 Toyota Code - Pressure Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B1423 Toyota?

Faulty Pressure Sensor
Pressure Sensor harness is open or shorted
Pressure Sensor circuit poor electrical connection
Faulty Air Conditioning Amplifier

How to Fix the DTC B1423 Toyota?

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 B1423 Toyota 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.

Need more information about the B1423 Toyota code?

Need more information on how to fix the B1423 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1423 Toyota 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 B1423 Toyota Code

1. What are common symptoms of OBDII code B1423 Toyota, Pressure Sensor Circuit?

The common symptoms include issues with the vehicle's fuel efficiency, rough idling, and potential stalling.

2. What are the possible causes of OBDII code B1423 Toyota?

The code B1423 Toyota can be triggered by a faulty pressure sensor, damaged wiring, or a malfunctioning engine control module (ECM).

3. How can I diagnose the Pressure Sensor Circuit issue related to code B1423 Toyota?

Diagnosing the issue involves using an OBDII scanner to retrieve the specific fault code, checking the wiring connections, and testing the pressure sensor for proper functioning.

4. Can a DIY enthusiast repair OBDII code B1423 Toyota, Pressure Sensor Circuit?

While some may attempt a DIY repair by replacing the pressure sensor or fixing wiring issues, it is recommended to consult a professional for accurate diagnosis and repair.

5. Is it safe to continue driving with OBDII code B1423 Toyota active?

It is not recommended to continue driving with the B1423 code active, as it can lead to potential performance issues and further damage to the vehicle over time.

6. How much does it typically cost to repair OBDII code B1423 Toyota, Pressure Sensor Circuit?

The cost of repairing the B1423 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Can a faulty pressure sensor cause other problems in the vehicle?

Yes, a faulty pressure sensor can cause a range of issues such as poor fuel economy, engine misfires, and difficulty starting the vehicle.

8. Are there any preventive measures to avoid triggering OBDII code B1423 Toyota?

Regular maintenance checks, including inspecting the pressure sensor and related components, can help prevent issues that may trigger the B1423 code.

9. How long does it typically take to repair OBDII code B1423 Toyota?

The repair time for the B1423 code can vary depending on the extent of the issue and the availability of parts, but it may take a few hours to a full day.

10. Will resetting the OBDII system clear the B1423 code permanently?

Resetting the OBDII system may temporarily clear the B1423 code, but if the underlying issue is not addressed, the code is likely to reappear.