P0108 Volkswagen 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 Volkswagen 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 Volkswagen 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 Volkswagen?
- 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 Volkswagen?
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 Volkswagen 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 Volkswagen Code
1. What are the common symptoms of OBDII code P0108 in a Volkswagen?
- Common symptoms include rough idling, engine stalling, decreased fuel efficiency, and the Check Engine light being illuminated.
2. What are the possible causes of the P0108 code in a Volkswagen?
- The code P0108 is typically triggered by issues such as a faulty MAP sensor, damaged wiring or connectors, vacuum leaks, or a problem with the engine's computer.
3. How can I diagnose the cause of the P0108 code in my Volkswagen?
- Diagnosing the P0108 code involves checking the MAP sensor with a multimeter, inspecting the wiring and connectors for damage, and ensuring there are no vacuum leaks in the system.
4. Can I still drive my Volkswagen with the P0108 code present?
- It is not recommended to drive your Volkswagen with the P0108 code active, as it can lead to further engine damage and potentially unsafe driving conditions.
5. How can I repair the P0108 code in my Volkswagen?
- Repairing the P0108 code may involve replacing the MAP sensor, repairing any damaged wiring or connectors, fixing vacuum leaks, or resetting the engine's computer.
6. Are there any DIY tips for fixing the P0108 code in a Volkswagen?
- DIY tips include checking and cleaning the MAP sensor, inspecting the wiring for any visible damage, and ensuring all connections are secure before seeking professional help.
7. Will resetting the Check Engine light fix the P0108 code in my Volkswagen?
- Resetting the Check Engine light may temporarily turn off the warning, but it will not fix the underlying issue causing the P0108 code to appear in your Volkswagen.
8. How much does it cost to repair the P0108 code in a Volkswagen?
- The cost of repairing the P0108 code in a Volkswagen can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.
9. Can extreme weather conditions trigger the P0108 code in a Volkswagen?
- Yes, extreme weather conditions such as very high or very low temperatures can sometimes affect the performance of the MAP sensor and lead to the P0108 code being triggered.
10. Is the P0108 code a serious issue that requires immediate attention in a Volkswagen?
- Yes, the P0108 code should be addressed promptly to prevent any potential damage to the engine and ensure the vehicle operates safely and efficiently.
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