AutoCodes – Lexus – B1475 Lexus

B1475 Lexus Code - A/C Inverter Cooling/Heating System Malfunction

Quick Answer

The A/C inverter in the A/C Inverter Assembly monitors the cooling water temperature with the temperature sensor. Common causes include Faulty A/C Inverter (w/Converter Inverter Assembly). 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: B1475 Lexus indicates A/C Inverter Cooling/Heating System Malfunction.
Common causes: Common causes include Faulty A/C Inverter (w/Converter Inverter Assembly).
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 5,379

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 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1475 Lexus Description

The A/C inverter in the A/C Inverter Assembly monitors the cooling water temperature with the temperature sensor. It stops compressor control and outputs the Diagnostic Trouble Code (DTC) when the monitored temperature is outside specified range (too high or too low). The hybrid system and the air conditioning system monitor the cooling water temperature separately. If DTCs referring to an inverter cooling system malfunction are output simultaneously, there may be trouble such as insufficient cooling water. If DTCs are output only for the air conditioning system, there may be an open or short in the temperature sensor circuit in the inverter. The OBDII code set when the cooling water temperature in the inverter is outside the specified range (temperature is too high), or there is an open or short to ground in the temperature sensor circuit.

OBDII Code B1475 Lexus - A/C Inverter Cooling/Heating System Malfunction - AutoCodes.com — B1475 Lexus Code - A/C Inverter Cooling/Heating System Malfunction

What does this mean?

What are the Possible Causes of the DTC B1475 Lexus?

Faulty A/C Inverter (w/Converter Inverter Assembly)

How to Fix the DTC B1475 Lexus?

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 B1475 Lexus 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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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 B1475 Lexus Code

1. What are the common symptoms of OBDII code B1475 in a Lexus related to the A/C Inverter Cooling/Heating System Malfunction?

- Common symptoms include the A/C system not cooling or heating properly, strange noises coming from the A/C system, and the A/C not turning on at all.

2. What are possible causes of OBDII code B1475 in a Lexus related to the A/C Inverter Cooling/Heating System Malfunction?

- Possible causes include a faulty A/C inverter, issues with the cooling or heating components, wiring problems, or a malfunctioning temperature sensor.

3. How can I diagnose OBDII code B1475 in a Lexus related to the A/C Inverter Cooling/Heating System Malfunction?

- Diagnosis typically involves using an OBDII scanner to read the code, conducting a visual inspection of the A/C components, checking the wiring for any damage, and testing the inverter and temperature sensor.

4. Are there any DIY repair tips for fixing OBDII code B1475 in a Lexus related to the A/C Inverter Cooling/Heating System Malfunction?

- DIY repair tips may include checking and replacing any blown fuses related to the A/C system, inspecting and cleaning the A/C filters, and ensuring proper connections of the A/C components.

5. Can OBDII code B1475 in a Lexus related to the A/C Inverter Cooling/Heating System Malfunction be reset without fixing the underlying issue?

- While the code can be cleared using an OBDII scanner, it is not recommended to reset the code without addressing the root cause, as the issue may persist and affect the A/C system's performance.

6. Is it safe to continue driving my Lexus with OBDII code B1475 related to the A/C Inverter Cooling/Heating System Malfunction?

- It is not recommended to drive the vehicle with this code present, as it may lead to further damage to the A/C system and potentially affect the vehicle's overall performance.

7. How much does it typically cost to repair OBDII code B1475 in a Lexus related to the A/C Inverter Cooling/Heating System Malfunction?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can a faulty A/C inverter cause other problems in a Lexus besides triggering OBDII code B1475 related to the A/C Inverter Cooling/Heating System Malfunction?

- Yes, a faulty A/C inverter can impact the overall performance of the A/C system, leading to issues such as inconsistent temperature control, unusual sounds, and reduced efficiency.

9. How long does it typically take to repair OBDII code B1475 in a Lexus related to the A/C Inverter Cooling/Heating System Malfunction?

- The repair time can vary based on the specific diagnosis and required fixes, but it may take anywhere from a few hours to a full day, depending on the complexity of the issue.

10. Can regular maintenance help prevent OBDII code B1475 related to the A/C Inverter Cooling/Heating System Malfunction in a Lexus?

- Yes, regular maintenance such as inspecting and servicing the A/C system components, checking for any leaks, and ensuring proper airflow can help prevent issues that may trigger this OBDII code.