P0108 2017 Chevrolet Silverado Code - Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Quick Answer
The Manifold Absolute Pressure (MAP) sensor measures the pressure inside the intake manifold. Common causes include Faulty Manifold Absolute Pressure (MAP) Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure 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
- P0108 2017 Chevrolet Silverado indicates Manifold Absolute Pressure/Barometric Pressure Circuit High Input.
- Common causes
- Common causes include Faulty Manifold Absolute Pressure (MAP) Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure 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.
Code P0108 2017 Chevrolet Silverado Description
The MAP sensor wiring includes 3 circuits. The Engine Control Module (ECM) supplies a regulated 5 volts to the sensor on a 5 V reference circuit. The ECM supplies ground on a low reference circuit. The MAP sensor provides a signal voltage to the ECM, relative to the pressure changes, on the MAP sensor signal circuit. The ECM converts the signal voltage input to a pressure value.
Under normal operation the greatest pressure that can exist in the intake manifold is at ignition ON, engine OFF, which is equal to the BARO. The lowest manifold pressure occurs when the vehicle is idling or decelerating. The ECM monitors the MAP sensor signal for pressure outside of the normal range.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the MAP Sensor voltage is more than 4.50 V for greater than 13 ms.
What are the Possible Causes of the DTC P0108 2017 Chevrolet Silverado?
- Faulty Manifold Absolute Pressure (MAP) Sensor
- Manifold Absolute Pressure Sensor harness is open or shorted
- Manifold Absolute Pressure Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0108 2017 Chevrolet Silverado?
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 P0108 2017 Chevrolet Silverado 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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Frequently Asked Questions about P0108 2017 Chevrolet Silverado Code
1. What does the OBDII code P0108 mean on a 2017 Chevrolet Silverado?
The code P0108 indicates that the Manifold Absolute Pressure (MAP) sensor is detecting a voltage signal that is higher than the expected range.
2. What are common symptoms of the P0108 code in a 2017 Chevrolet Silverado?
Symptoms may include poor engine performance, rough idling, reduced fuel efficiency, hesitation during acceleration, and the Check Engine Light turning on.
3. What causes the P0108 code on a 2017 Chevrolet Silverado?
Common causes include a faulty MAP sensor, damaged wiring or connectors, a vacuum leak, or issues with the Engine Control Module (ECM).
4. Can a dirty or clogged air filter cause the P0108 code?
While not a direct cause, a severely clogged air filter can affect engine performance and indirectly contribute to MAP sensor issues.
5. How do I diagnose the P0108 code on my 2017 Chevrolet Silverado?
Start by inspecting the MAP sensor, its wiring, and connectors for damage. Use a scan tool to check sensor readings and compare them to manufacturer specifications.
6. Can I drive my 2017 Chevrolet Silverado with the P0108 code?
Driving with the P0108 code is not recommended as it can lead to poor engine performance, increased emissions, and potential damage to other components.
7. How do I fix the P0108 code on my 2017 Chevrolet Silverado?
Repairs may include replacing the MAP sensor, repairing damaged wiring or connectors, fixing any vacuum leaks, or reprogramming/updating the ECM.
8. How much does it cost to fix the P0108 code on a 2017 Chevrolet Silverado?
The cost depends on the issue. Replacing a MAP sensor typically costs $100–$300, including parts and labor. Wiring or ECM repairs may cost more.
9. Will clearing the P0108 code with a scan tool fix the problem?
Clearing the code will temporarily turn off the Check Engine Light but won’t fix the underlying issue causing the P0108 code.
10. Can a failing throttle position sensor trigger the P0108 code?
While uncommon, issues with the throttle position sensor or related components can sometimes affect manifold pressure readings and trigger the P0108 code.
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