AutoCodes – Lexus – B1471 Lexus

B1471 Lexus Code - A/C Inverter High Voltage Power Resource System Malfunction

Quick Answer

The A/C Inverter Assembly monitors the power voltage from the main battery in the self circuit. Common causes include Faulty Hybrid Control ECU, 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: B1471 Lexus indicates A/C Inverter High Voltage Power Resource System Malfunction.
Common causes: Common causes include Faulty Hybrid Control ECU, 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 1,818

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 B1471 Lexus Description

The A/C Inverter Assembly monitors the power voltage from the main battery in the self circuit. It stops compressor control and outputs the Diagnostic Trouble Code (DTC) when the monitored voltage is outside the specified range. The output DTC is memorized as previous trouble. The compressor control may not resume unless the power switch is turned off. The OBDII code set when an open or short in A/C Inverter High Voltage Power Resource System.

OBDII Code B1471 Lexus - A/C Inverter High Voltage Power Resource System Malfunction - AutoCodes.com — B1471 Lexus Code - A/C Inverter High Voltage Power Resource System Malfunction

What does this mean?

What are the Possible Causes of the DTC B1471 Lexus?

Faulty Hybrid Control ECU
Faulty A/C Inverter (w/Converter Inverter Assembly)

How to Fix the DTC B1471 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 B1471 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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Need Help with the Code?

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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 B1471 Lexus Code

1. What are the common symptoms of OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction?

- Common symptoms include the air conditioning system not working properly, blowing warm air, or not turning on at all.

2. What can cause the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction?

- The code can be triggered by issues such as a faulty inverter assembly, damaged wiring, or a malfunctioning power resource system component.

3. How can I diagnose the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction?

- Diagnosis typically involves using a scan tool to retrieve the specific trouble code, inspecting the inverter assembly and related components for damage, and checking the wiring for any signs of wear or disconnection.

4. What are some repair tips for fixing the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction?

- Repair tips may include replacing the faulty inverter assembly, repairing or replacing damaged wiring, or addressing any other component issues identified during diagnosis.

5. Can I continue to drive my Lexus with the OBDII code B1471 related to the A/C Inverter High Voltage Power Resource System Malfunction?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the air conditioning system or other related components.

6. How much does it typically cost to repair the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction?

- Repair costs can vary depending on the specific issue causing the code, but it is advisable to consult a professional mechanic for an accurate estimate.

7. Are there any safety concerns associated with the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction?

- While there may not be immediate safety hazards, driving with a malfunctioning air conditioning system can be uncomfortable, especially in extreme weather conditions.

8. Can I reset the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction on my own?

- You can attempt to reset the code using an OBDII scan tool, but it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

9. How long does it typically take to repair the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction?

- The repair time can vary depending on the complexity of the issue and the availability of parts, so it is best to consult with a mechanic for a more accurate timeframe.

10. Is the OBDII code B1471 in a Lexus related to the A/C Inverter High Voltage Power Resource System Malfunction a common issue?

- While not as common as some other OBDII codes, issues with the A/C inverter high voltage power resource system can occur in Lexus vehicles and should be addressed promptly to avoid further complications.