P0103 2017 GMC Sierra Code - Mass or Volume Air Flow Circuit High Input
Quick Answer
The Mass Air Flow (MAF) sensor is integrated with the multifunction intake air sensor. Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks. 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
- P0103 2017 GMC Sierra indicates Mass or Volume Air Flow Circuit High Input.
- Common causes
- Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks.
- 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.
Code P0103 2017 GMC Sierra Description
The ECM applies 5 V to the MAF sensor on the MAF sensor signal circuit. The sensor uses voltage to produce a variable frequency signal based on the inlet air flow through the sensor bore. The signal varies with engine load and is displayed by the scan tool as Hertz (Hz) and grams per second (g/s). Ignition voltage and ground circuits are also supplied to the multifunction intake air sensor internal circuits for the Intake Air Temperature (IAT) sensor 2, Humidity sensor, and MAF sensor.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the MAF Sensor Signal is greater than 14, 500 Hz (about 1233 g/s) for greater than 10 s.
What are the Possible Causes of the DTC P0103 2017 GMC Sierra?
- Dirty Air Filter
- Dirty Mass Air Flow (MAF) Sensor
- Intake air leaks
- Faulty Mass Air Flow Sensor
- Mass Air Flow Sensor harness is open or shorted
- Mass Air Flow Sensor circuit poor electrical connection
How to Fix the DTC P0103 2017 GMC Sierra?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0103 2017 GMC Sierra 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.
Need more information about the P0103 2017 GMC Sierra code?
Need more information on how to fix the P0103 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0103 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0103 2017 GMC Sierra Code
1. What does the OBDII code P0103 mean on a 2017 GMC Sierra?
P0103 indicates a "Mass or Volume Air Flow Circuit High Input," meaning the MAF sensor is sending a voltage signal higher than expected to the engine control module (ECM).
2. What are the common symptoms of a P0103 code on a 2017 GMC Sierra?
Symptoms may include rough idling, poor acceleration, reduced fuel efficiency, stalling, or the Check Engine Light turning on.
3. What causes the P0103 code on a 2017 GMC Sierra?
Common causes include a dirty or faulty MAF sensor, a vacuum or intake air leak, wiring or connector issues, or an improperly installed aftermarket air intake system.
4. Can I drive my 2017 GMC Sierra with a P0103 code?
Driving with this code is possible but not recommended, as it can lead to poor performance, increased emissions, and potential damage to the engine over time.
5. How do I fix the P0103 code on my 2017 GMC Sierra?
Start by inspecting and cleaning the MAF sensor. If the issue persists, check for damaged wiring, loose connections, or intake air leaks. Replace the MAF sensor if necessary.
6. How do I clean the MAF sensor on a 2017 GMC Sierra?
Remove the sensor carefully and spray it with a MAF sensor cleaner. Avoid touching the sensor's delicate components. Let it dry completely before reinstalling.
7. Can a dirty air filter cause a P0103 code on a 2017 GMC Sierra?
While unlikely to directly cause P0103, a severely clogged or improperly installed air filter can affect airflow readings, potentially contributing to the issue.
8. How much does it cost to fix a P0103 code on a 2017 GMC Sierra?
Cleaning the MAF sensor may cost less than $15 if done yourself. Replacing the sensor typically costs $100–$300, depending on parts and labor.
9. Will resetting the Check Engine Light fix the P0103 code on my 2017 GMC Sierra?
Resetting the light may clear the code temporarily, but the underlying issue causing the code must be addressed to prevent it from returning.
10. Can a vacuum leak cause the P0103 code on a 2017 GMC Sierra?
Yes, a vacuum leak can disrupt airflow measurements, potentially causing the MAF sensor to send high voltage signals and trigger the P0103 code.
Discuss the causes and fixes for P0103 2017 GMC Sierra OBDII Code
Code P0103 2017 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
