AutoCodes – Scion – P0102 2007 Scion xB

P0102 2007 Scion xB Code - Mass or Volume Air Flow Circuit Low Input

Quick Answer

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. Common causes include Faulty mass air flow sensor, Intake air leaks, Dirty mass air flow sensor. 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: P0102 2007 Scion xB indicates Mass or Volume Air Flow Circuit Low Input.
Common causes: Common causes include Faulty mass air flow sensor, Intake air leaks, Dirty mass air flow sensor.
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 5,461

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 18, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0102 2007 Scion xB Description

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM). The ECM controls the temperature of the hot film by a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the MAF Sensor Signal is less than the factory specifications.

OBDII Code P0102 2007 Scion xB - Mass or Volume Air Flow Circuit Low Input - AutoCodes.com — P0102 2007 Scion xB Code - Mass or Volume Air Flow Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0102 2007 Scion xB?

Faulty mass air flow sensor
Intake air leaks
Dirty mass air flow sensor
Dirty mass air filter
Mass air flow sensor harness is open or shorted
Mass air flow sensor circuit poor electrical connection

How to Fix the DTC P0102 2007 Scion xB?

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

Before replacing the Mass Air Flow (MAF) Sensor, try replacing the air filter and cleaning the Mass Air Flow Sensor with low compress air or Mass Air Flow Sensor Cleaner. Reset code and drive vehicle. If the code comes back, you must replace the Mass Air Flow Sensor to fix the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0102 2007 Scion xB 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 P0102 2007 Scion xB Code

1. What are the common symptoms of OBDII code P0102 in a 2007 Scion xB?

The common symptoms of code P0102 in a 2007 Scion xB include poor acceleration, rough idle, stalling, and decreased fuel efficiency.

2. What does the OBDII code P0102 Mass or Volume Air Flow Circuit Low Input mean?

Code P0102 indicates that the Mass Air Flow (MAF) sensor in the 2007 Scion xB is detecting a lower than normal voltage input from the air intake system.

3. What are the possible causes of OBDII code P0102 in a 2007 Scion xB?

Possible causes of code P0102 in a 2007 Scion xB include a faulty MAF sensor, a dirty or clogged air filter, vacuum leaks, wiring issues, or a problem with the intake air system.

4. How can I diagnose the OBDII code P0102 in my 2007 Scion xB?

Diagnosing code P0102 involves checking the MAF sensor for dirt or debris, inspecting the air filter, examining the intake system for leaks, and testing the MAF sensor's voltage output with a multimeter.

5. Can a dirty air filter trigger OBDII code P0102 in a 2007 Scion xB?

Yes, a dirty or clogged air filter can disrupt the airflow to the MAF sensor, causing it to detect a low input voltage and trigger code P0102 in a 2007 Scion xB.

6. What are some repair tips for addressing OBDII code P0102 in a 2007 Scion xB?

Repair tips for code P0102 include cleaning or replacing the air filter, inspecting and repairing any vacuum leaks, testing the MAF sensor, and ensuring proper electrical connections.

7. Can driving with OBDII code P0102 in a 2007 Scion xB cause further damage?

Continuing to drive with code P0102 in a 2007 Scion xB can lead to decreased engine performance, potential engine misfires, and reduced fuel efficiency if left unresolved.

8. Is it safe to reset the OBDII code P0102 in a 2007 Scion xB using a scan tool?

Resetting the code with a scan tool may temporarily clear the error code, but it will not fix the underlying issue causing code P0102 in a 2007 Scion xB. It's important to diagnose and address the root cause of the problem.

9. Can a DIY enthusiast fix OBDII code P0102 in a 2007 Scion xB?

Depending on their skill level, a DIY enthusiast may be able to address code P0102 by cleaning or replacing the air filter, inspecting for vacuum leaks, or testing the MAF sensor. More complex issues may require professional help.

10. How much does it typically cost to repair OBDII code P0102 in a 2007 Scion xB at a mechanic?

The cost of repairing code P0102 in a 2007 Scion xB can vary depending on the root cause of the issue. It may range from $100 to $500 or more, including parts and labor.