P0108 Fault Code

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0108 code indicates that the Manifold Absolute Pressure (MAP) sensor is sending a high input signal to the Engine Control Module (ECM). This can affect the engine's performance by not allowing it to maintain the appropriate air-fuel mixture. The MAP sensor measures the pressure within the intake manifold, which is crucial for effective engine operation.

What are the symptoms of the P0108 code?

Common symptoms associated with a P0108 code may include:

• Check Engine Light (CEL) illuminated
• Poor fuel economy
• Rough idle or engine stalling
• Engine performance issues, such as lack of power or acceleration problems
• Increased emissions.

What causes the P0108 code?

A P0108 code can arise from various issues, including:

• Faulty MAP sensor
• Electrical problems such as short circuits or open circuits
• Vacuum leaks in the intake manifold
• Damaged wiring or connectors leading to the MAP sensor
• Faulty ECM or programming issues.

How to fix P0108?

To fix a P0108 code, follow these steps:

1. Inspect the wiring and connectors leading to the MAP sensor for damage or corrosion.
2. Check for vacuum leaks in the intake system.
3. Use a multimeter to test the MAP sensor and ensure it operates within specifications.
4. If the sensor is faulty, replace it.
5. Clear the trouble code from the ECM and take the vehicle for a test drive to ensure the problem is resolved.