P0108 1997 Ford F150 Code - BARO/MAP Sensor High Voltage Detected
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 1997 Ford F150 indicates BARO/MAP Sensor High Voltage Detected .
- 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 1997 Ford F150 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 1997 Ford F150?
- 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 1997 Ford F150?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0108 1997 Ford F150 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 1997 Ford F150 Code
1. What are the common symptoms of OBDII code P0108 in a 1997 Ford F150?
- Common symptoms include poor engine performance, rough idling, stalling, decreased fuel efficiency, and the illumination of the Check Engine Light.
2. What does the OBDII code P0108 in a 1997 Ford F150 indicate?
- The code indicates that the Powertrain Control Module (PCM) has detected high voltage from the BARO (barometric pressure) or MAP (manifold absolute pressure) sensor.
3. What are the possible causes of OBDII code P0108 in a 1997 Ford F150?
- Possible causes include a faulty BARO/MAP sensor, damaged wiring or connectors in the sensor circuit, a vacuum leak in the intake manifold, or a problem with the PCM.
4. How can I diagnose the BARO/MAP sensor to address code P0108 in my 1997 Ford F150?
- You can use a multimeter to test the sensor's voltage output, check the sensor's wiring for continuity and shorts, and inspect for any signs of physical damage or corrosion.
5. What are some repair tips for resolving OBDII code P0108 in a 1997 Ford F150?
- Repair tips include replacing the faulty BARO/MAP sensor, repairing damaged wiring or connectors, fixing any vacuum leaks in the intake manifold, and resetting the PCM.
6. Can I drive my 1997 Ford F150 with OBDII code P0108?
- It is not recommended to drive the vehicle with a P0108 code as it can lead to further engine damage and poor performance. It's best to address the issue promptly.
7. How much does it typically cost to repair OBDII code P0108 in a 1997 Ford F150?
- The cost of repairs can vary depending on the root cause of the issue. Replacing the BARO/MAP sensor can range from $50 to $200, while fixing wiring or vacuum leaks may cost more.
8. Will resetting the Check Engine Light resolve OBDII code P0108 in a 1997 Ford F150?
- Resetting the light may temporarily clear the code, but it will likely return if the underlying issue is not addressed. It's important to diagnose and repair the problem to prevent future issues.
9. How can I prevent OBDII code P0108 from reoccurring in my 1997 Ford F150?
- Regular maintenance, such as checking for vacuum leaks, ensuring proper sensor function, and addressing any engine performance issues promptly, can help prevent the code from reoccurring.
10. Is it safe to ignore OBDII code P0108 in a 1997 Ford F150?
- Ignoring the code can lead to potential engine damage and worsened performance. It's essential to address the issue to maintain the health and efficiency of your vehicle.
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