AutoCodes – Toyota – B1412 2014 Toyota RAV4

B1412 2014 Toyota RAV4 Code - Ambient Temperature Sensor Circuit

Quick Answer

The Cooler Thermistor (Ambient Temperature Sensor) is installed in front of the condenser to detect the ambient temperature which is used to control the air conditioning system AUTO mode. Common causes include Faulty Cooler Thermistor (Ambient Temperature Sensor), Ambient Temperature Sensor harness is open or shorted, Ambient Temperature 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: B1412 2014 Toyota RAV4 indicates Ambient Temperature Sensor Circuit.
Common causes: Common causes include Faulty Cooler Thermistor (Ambient Temperature Sensor), Ambient Temperature Sensor harness is open or shorted, Ambient Temperature 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 950

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 19, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1412 2014 Toyota RAV4 Description

The Cooler Thermistor (Ambient Temperature Sensor) is installed in front of the condenser to detect the ambient temperature which is used to control the air conditioning system AUTO mode. This sensor is connected to the air conditioning amplifier assembly and detects fluctuations in the ambient temperature. This data is used for controlling the cabin temperature. The sensor sends a signal to the air conditioning amplifier assembly. The resistance of the Cooler Thermistor (Ambient Temperature Sensor) changes in accordance with the ambient temperature. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.
The air conditioning amplifier assembly applies a voltage (5 V) to the Cooler Thermistor (Ambient Temperature Sensor) and reads voltage changes due to changes in the resistance of the Cooler Thermistor (Ambient Temperature Sensor). The combination meter assembly sends the read signal to the air conditioning amplifier via CAN communication.
The Diagnostic Trouble Code (DTC) will be set when the Air Conditioning Amplifier Assembly detects an open or short in the Cooler Thermistor (Ambient Temperature Sensor) circuit.

OBDII Code B1412 2014 Toyota RAV4 - Ambient Temperature Sensor Circuit - AutoCodes.com — B1412 2014 Toyota RAV4 Code - Ambient Temperature Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B1412 2014 Toyota RAV4?

Faulty Cooler Thermistor (Ambient Temperature Sensor)
Ambient Temperature Sensor harness is open or shorted
Ambient Temperature Sensor circuit poor electrical connection
Faulty Air Conditioning Amplifier Assembly

How to Fix the DTC B1412 2014 Toyota RAV4?

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 does this mean?

Code Tech Notes

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1412 2014 Toyota RAV4 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 B1412 2014 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1412 in a 2014 Toyota RAV4?

The common symptoms of OBDII code B1412 in a 2014 Toyota RAV4 include inaccurate ambient temperature readings on the vehicle's display, erratic climate control system operation, or a malfunction indicator light (MIL) illuminated on the dashboard.

2. What does the Ambient Temperature Sensor Circuit do in a 2014 Toyota RAV4?

The Ambient Temperature Sensor Circuit in a 2014 Toyota RAV4 is responsible for monitoring the outside air temperature and providing this information to the vehicle's climate control system for accurate temperature adjustments inside the cabin.

3. What are the possible causes of OBDII code B1412 in a 2014 Toyota RAV4?

The possible causes of OBDII code B1412 in a 2014 Toyota RAV4 include a faulty ambient temperature sensor, damaged wiring or connectors in the sensor circuit, sensor calibration issues, or a malfunctioning climate control module.

4. How can I diagnose OBDII code B1412 in my 2014 Toyota RAV4?

To diagnose OBDII code B1412 in a 2014 Toyota RAV4, you can use an OBDII scanner to read the code, visually inspect the ambient temperature sensor and its wiring for any visible damage, and perform a continuity test on the sensor circuit to check for electrical faults.

5. Can I still drive my 2014 Toyota RAV4 with OBDII code B1412?

It is generally safe to drive your 2014 Toyota RAV4 with OBDII code B1412, but you may experience issues with the climate control system or inaccurate temperature readings. It is recommended to have the issue diagnosed and repaired at your earliest convenience.

6. How can I repair OBDII code B1412 in my 2014 Toyota RAV4?

To repair OBDII code B1412 in a 2014 Toyota RAV4, you may need to replace the ambient temperature sensor, repair any damaged wiring or connectors in the sensor circuit, recalibrate the sensor, or replace the climate control module if necessary.

7. Is OBDII code B1412 a serious issue in a 2014 Toyota RAV4?

OBDII code B1412 is not typically considered a serious issue in a 2014 Toyota RAV4 as it primarily affects the ambient temperature sensor circuit and climate control system operation. However, it is still important to address the problem to ensure proper functionality of these systems.

8. How much does it cost to repair OBDII code B1412 in a 2014 Toyota RAV4?

The cost to repair OBDII code B1412 in a 2014 Toyota RAV4 can vary depending on the exact cause of the issue, labor costs, and parts needed. On average, the repair cost may range from $100 to $300, but it's best to get a quote from a professional mechanic.

9. Can OBDII code B1412 in a 2014 Toyota RAV4 cause other problems if left untreated?

If left untreated, OBDII code B1412 in a 2014 Toyota RAV4 may lead to continued inaccuracies in the ambient temperature readings, potential issues with the climate control system, and increased fuel consumption due to inefficient temperature regulation.

10. How long does it take to repair OBDII code B1412 in a 2014 Toyota RAV4?

The repair time for OBDII code B1412 in a 2014 Toyota RAV4 can vary depending on the specific diagnosis and required repairs. In most cases, it may take anywhere from 1 to 3 hours to complete the repair, but this timeframe can change based on the complexity of the issue.