P0108 2016 GMC Sierra Code - Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Quick Answer
The P0108 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Manifold Absolute Pressure (MAP) sensor circuit, specifically a high input signal. Common causes include Faulty MAP sensor, Damaged or corroded wiring in the sensor circuit, ECM malfunction. 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
- P0108 2016 GMC Sierra indicates Manifold Absolute Pressure/Barometric Pressure Circuit High Input.
- Common causes
- Common causes include Faulty MAP sensor, Damaged or corroded wiring in the sensor circuit, ECM malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0108 2016 GMC Sierra Description
The P0108 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Manifold Absolute Pressure (MAP) sensor circuit, specifically a high input signal. The MAP sensor measures the intake manifold pressure, which is crucial for the engine control module (ECM) to calculate the air-fuel mixture and ignition timing. When the ECM detects a high voltage input from the MAP sensor, it means that the pressure in the intake manifold is higher than expected, which can lead to incorrect fuel delivery and ignition timing, affecting the engine's performance.
Common Causes of P0108 2016 GMC Sierra
- Faulty MAP sensor
- Damaged or corroded wiring in the sensor circuit
- ECM malfunction
- Vacuum leaks in the intake manifold
- Clogged or dirty air filter restricting airflow to the sensor
Symptoms of P0108 2016 GMC Sierra
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation or lack of power during acceleration
- Engine misfires
- Check Engine Light illuminated on the dashboard
How to Fix P0108 2016 GMC Sierra
- Begin by visually inspecting the wiring and connectors in the MAP sensor circuit for any signs of damage or corrosion. Repair or replace any damaged components.
- Test the MAP sensor using a multimeter to check for proper voltage output. Replace the sensor if it is faulty.
- Check for vacuum leaks in the intake manifold by performing a smoke test or using a vacuum gauge. Repair any leaks found.
- Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, consult a professional mechanic for further diagnosis and potential ECM replacement.
Cost to Fix P0108 2016 GMC Sierra
The typical repair costs for addressing a P0108 code on a 2016 GMC Sierra can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a detailed estimate from a trusted mechanic before proceeding with the repair.
Need more information about the P0108 2016 GMC Sierra code?
Need more information on how to fix the P0108 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0108 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0108 2016 GMC Sierra Code
1. What does the OBDII code P0108 mean on a 2016 GMC Sierra?
P0108 indicates a "Manifold Absolute Pressure/Barometric Pressure Circuit High Input," meaning the MAP sensor is sending a voltage signal to the engine control module (ECM) that is higher than expected.
2. What are the common symptoms of code P0108 in a 2016 GMC Sierra?
Symptoms may include poor engine performance, rough idling, reduced fuel efficiency, black smoke from the exhaust, and the check engine light turning on.
3. What causes the P0108 code to appear in a 2016 GMC Sierra?
Common causes include a faulty MAP sensor, damaged wiring or connectors, a vacuum leak, or a malfunctioning ECM.
4. Can a dirty air filter cause the P0108 code in a 2016 GMC Sierra?
While not a direct cause, a clogged air filter can contribute to airflow issues that may affect sensor readings.
5. How can I diagnose the P0108 code on my 2016 GMC Sierra?
Start by visually inspecting the MAP sensor, wiring, and connectors. Use a multimeter to check the sensor’s voltage output and compare it to the manufacturer’s specifications.
6. How do I fix the P0108 code on a 2016 GMC Sierra?
Repairs may involve cleaning or replacing the MAP sensor, fixing damaged wiring or connectors, or addressing any vacuum leaks in the intake system.
7. Can a vacuum leak trigger the P0108 code on a 2016 GMC Sierra?
Yes, a vacuum leak can cause incorrect pressure readings, leading to the P0108 code.
8. Is it safe to drive my 2016 GMC Sierra with the P0108 code?
Driving with the P0108 code is not recommended, as it can lead to poor engine performance and potential damage over time.
9. How much does it typically cost to fix the P0108 code on a 2016 GMC Sierra?
The cost can vary depending on the issue. Replacing a MAP sensor typically costs $100-$300, including parts and labor.
10. Can a faulty ECM cause the P0108 code in a 2016 GMC Sierra?
While rare, a malfunctioning ECM can cause the P0108 code if it misinterprets sensor data or has an internal fault.
Discuss the causes and fixes for P0108 2016 GMC Sierra OBDII Code
Code P0108 2016 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.