AutoCodes – Scion – B1479 Scion

B1479 Scion Code - Flow Sensor Circuit

Quick Answer

The Flow Sensor is built into the compressor and outputs a signal indicating the flow rate of the refrigerant. Common causes include Faulty Flow Sensor (Built into the compressor), Flow Sensor harness is open or shorted, Flow 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: B1479 Scion indicates Flow Sensor Circuit.
Common causes: Common causes include Faulty Flow Sensor (Built into the compressor), Flow Sensor harness is open or shorted, Flow 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 1,446

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 B1479 Scion Description

The Flow Sensor is built into the compressor and outputs a signal indicating the flow rate of the refrigerant. The Air Conditioning Amplifier converts the received signal to refrigerant flow rate data according to the characteristics of the sensor, which it then sends to the ECM via CAN communication.

OBDII Code B1479 Scion - Flow Sensor Circuit - AutoCodes.com — B1479 Scion Code - Flow Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B1479 Scion?

Faulty Flow Sensor (Built into the compressor)
Flow Sensor harness is open or shorted
Flow Sensor circuit poor electrical connection
Faulty Air Conditioning Amplifier

How to Fix the DTC B1479 Scion?

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 B1479 Scion 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 B1479 Scion Code

1. What are the common symptoms of OBDII code B1479 in a Scion related to the Flow Sensor Circuit?

- Common symptoms include rough idling, poor acceleration, decreased fuel efficiency, and potential stalling of the engine.

2. What can cause the OBDII code B1479 in a Scion related to the Flow Sensor Circuit?

- Possible causes may include a faulty mass airflow sensor, damaged wiring or connectors in the flow sensor circuit, or a malfunctioning engine control module.

3. How can I diagnose the OBDII code B1479 in my Scion?

- Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, inspecting the mass airflow sensor and its connections, and checking the wiring for any visible damage.

4. Can a dirty air filter trigger the OBDII code B1479 in a Scion?

- Yes, a dirty air filter can disrupt the airflow sensor's readings and potentially lead to the triggering of code B1479. Regular air filter maintenance is important for optimal sensor performance.

5. What are some repair tips for resolving the OBDII code B1479 in a Scion?

- Repair tips may include cleaning or replacing the mass airflow sensor, repairing any damaged wiring or connectors, ensuring proper air filter maintenance, and resetting the trouble code.

6. Is it safe to continue driving my Scion with the OBDII code B1479 related to the Flow Sensor Circuit?

- It is generally not recommended to drive your vehicle with this code present, as it can lead to engine performance issues and potential further damage if left unresolved.

7. Can a DIY enthusiast fix the OBDII code B1479 in a Scion at home?

- Depending on the root cause, some DIY enthusiasts with the necessary tools and knowledge may be able to address this code by inspecting and potentially replacing the mass airflow sensor or repairing wiring issues.

8. How much does it typically cost to repair the OBDII code B1479 in a Scion at a mechanic or dealership?

- Repair costs can vary but may include diagnostic fees, parts replacement costs, and labor charges. It's advisable to obtain quotes from different service providers to compare prices.

9. What long-term effects can the OBDII code B1479 have on my Scion if left unrepaired?

- If left unresolved, code B1479 can lead to decreased engine performance, reduced fuel efficiency, potential damage to other engine components, and ultimately more costly repairs down the line.

10. Can resetting the OBDII code B1479 in my Scion make it go away permanently?

- Resetting the code may temporarily clear the check engine light, but if the underlying issue causing code B1479 is not addressed, the code is likely to reappear. It's crucial to diagnose and fix the root cause.