
What does Error Code P0108 mean?
Moderate Issue
DTC Code P0108 indicates a Manifold Absolute Pressure/Barometric Pressure Circuit High Input, where the ECM detects the MAP sensor voltage exceeding 4.50 V for more than 13 ms, suggesting abnormal pressure readings in the intake manifold.
What are the symptoms of Error Code P0108?
- Engine Light ON: The check engine light or service engine soon warning light illuminates, indicating a potential issue with the manifold absolute pressure (MAP) sensor circuit.
- Engine Rough Idle: The engine may experience a rough idle due to incorrect air-fuel mixture caused by the high input from the MAP sensor.
- Engine Hesitation: There may be noticeable hesitation during acceleration as the engine struggles to maintain proper performance due to the MAP sensor's high input.
What causes Error Code P0108?
- The Manifold Absolute Pressure (MAP) sensor may be malfunctioning, leading to incorrect pressure readings.
- An open or shorted MAP sensor harness can disrupt the signal transmission, causing high input readings.
- Poor electrical connections in the MAP sensor circuit can result in intermittent or incorrect data being sent to the ECM.
- A faulty Engine Control Module (ECM) might misinterpret the sensor data, triggering the error code.
Find the Root Cause with AI
Analyze symptoms and error codes with artificial intelligence for a precise diagnosis
Fast Diagnosis in under 3 minutes
Precise AI-powered analysis
Free No hidden fees
Data-Driven Over 40,000 reference cases
How to fix Error Code P0108?
- Verify DTC Code: Confirm the presence of DTC P0108 using an OBD-II scanner. Check for any additional codes that may be present.
- Inspect MAP Sensor: Visually inspect the Manifold Absolute Pressure (MAP) sensor for any signs of damage, corrosion, or loose connections. Ensure the sensor is properly mounted.
- Check Wiring and Connectors: Examine the wiring and connectors leading to the MAP sensor for any signs of wear, fraying, or disconnection. Repair or replace as necessary.
- Test MAP Sensor Voltage: Using a multimeter, measure the voltage at the MAP sensor connector. Compare the readings to the manufacturer's specifications to ensure they are within range.
- Inspect Vacuum Lines: Check the vacuum lines connected to the MAP sensor for any leaks, blockages, or disconnections. Repair or replace as needed.
- Perform ECU Reset: After repairs, clear the DTC code from the ECU and perform a test drive to ensure the issue does not reoccur.