P1108 – OBD-II DTC

OBD-II DTC P1108 – MAF Sensor In Range But Higher Than Expected

DTC P1108 meaning

DTC P1108 refers to a diagnostic trouble code indicating that the Mass Air Flow (MAF) sensor is reading values that are within the expected range but are higher than what the engine control module (ECM) anticipates. This discrepancy can lead to improper air-fuel mixture adjustments, affecting engine performance and emissions.

DTC P1108 symptoms

Common symptoms associated with DTC P1108 may include:

• Reduced engine performance
• Increased fuel consumption
• Rough idling or stalling
• Check Engine Light illuminated
• Unusual engine noises

DTC P1108 causes

Several factors can contribute to the occurrence of DTC P1108, including:

• Faulty MAF sensor
• Dirty or clogged air filter
• Vacuum leaks in the intake system
• Improperly installed or damaged MAF sensor wiring
• Issues with the engine control module (ECM)

DTC P1108 seriousness

DTC P1108 is considered a moderate issue. While it may not cause immediate engine failure, it can lead to poor engine performance, increased emissions, and potential long-term damage if not addressed. It is advisable to diagnose and repair the issue promptly to maintain optimal vehicle operation.

How to diagnose DTC P1108

To diagnose DTC P1108, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1108 code.
2. Inspect the MAF sensor and its wiring for any visible damage or disconnections.
3. Check the air filter for cleanliness and proper installation.
4. Perform a vacuum leak test in the intake system.
5. Compare the MAF sensor readings with manufacturer specifications using a scan tool.
6. Test the MAF sensor’s electrical connections and ground.

How to fix DTC P1108 step-by-step instructions

To fix DTC P1108, follow these steps:

1. Inspect and clean the MAF sensor using appropriate cleaning solutions.
2. Replace the air filter if it is dirty or clogged.
3. Repair or replace any damaged wiring or connectors related to the MAF sensor.
4. Address any vacuum leaks found during diagnosis.
5. Clear the DTC using an OBD-II scanner and test drive the vehicle to see if the code returns.

How to erase DTC P1108

To erase DTC P1108, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the engine to ensure the code does not reappear.

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