AutoCodes – Chevrolet – P0108 2014 Chevrolet Silverado

P0108 2014 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 2014 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.

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Code Popularity 673

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 20, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0108 2014 Chevrolet Silverado Description

The Manifold Absolute Pressure (MAP) sensor measures the pressure inside the intake manifold. Pressure in the intake manifold is affected by engine speed, throttle opening, air temperature, Barometric Pressure (BARO) and if equipped, turbocharger output. A diaphragm within the MAP sensor is displaced by the pressure changes that occur from the varying load and operating conditions of the engine. The sensor translates this action into electrical resistance.
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.

OBDII Code P0108 2014 Chevrolet Silverado - Manifold Absolute Pressure/Barometric Pressure Circuit High Input - AutoCodes.com — P0108 2014 Chevrolet Silverado Code - Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0108 2014 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 2014 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 2014 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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Need more information on how to fix the P0108 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P0108 2014 Chevrolet Silverado Code

1. What does the OBDII code P0108 mean on a 2014 Chevrolet Silverado?

P0108 indicates that the Manifold Absolute Pressure (MAP) sensor is reporting a voltage signal that is higher than the expected range, suggesting a potential issue in the MAP/Barometric Pressure circuit.

2. What are common symptoms of code P0108 in a 2014 Chevrolet Silverado?

Common symptoms include poor engine performance, rough idling, difficulty starting, reduced fuel efficiency, black smoke from the exhaust, and the illumination of the Check Engine Light.

3. What causes the P0108 code to appear on a 2014 Chevrolet Silverado?

Possible causes include a faulty MAP sensor, damaged wiring or connectors in the MAP sensor circuit, vacuum leaks, a clogged air filter, or issues with the engine control module (ECM).

4. How do you diagnose the P0108 code on a 2014 Chevrolet Silverado?

Start by inspecting the MAP sensor and its wiring for damage or loose connections. Use a scan tool to check live data from the MAP sensor and compare it to manufacturer specifications. Test for vacuum leaks and ensure the sensor is receiving proper voltage.

5. Can a faulty MAP sensor cause the P0108 code on a 2014 Chevrolet Silverado?

Yes, a faulty MAP sensor that sends incorrect voltage signals to the ECM is a common cause of the P0108 code.

6. How can I fix the P0108 code on my 2014 Chevrolet Silverado?

Repairs may include replacing the MAP sensor, repairing or replacing damaged wiring, fixing vacuum leaks, or cleaning a clogged air filter. If necessary, reprogramming or replacing the ECM may be required.

7. Is it safe to drive a 2014 Chevrolet Silverado with a P0108 code?

While the vehicle may still be drivable, driving with a P0108 code can lead to poor engine performance, increased fuel consumption, and potential damage to other components. Itâ€™s best to address the issue promptly.

8. How much does it cost to repair a P0108 code on a 2014 Chevrolet Silverado?

Repair costs can vary but typically include $75-$125 for a MAP sensor replacement and additional labor charges if wiring repairs or diagnostics are needed. Total costs depend on the specific issue.

9. Can a dirty air filter trigger the P0108 code on a 2014 Chevrolet Silverado?

Yes, a clogged or dirty air filter can restrict airflow and potentially lead to incorrect readings from the MAP sensor, which could trigger the P0108 code.

10. Do I need to clear the P0108 code after repairs on a 2014 Chevrolet Silverado?

Yes, after completing repairs, use an OBDII scan tool to clear the code and reset the Check Engine Light. Drive the vehicle to ensure the issue is resolved and the code does not return.