P0108 1999 Honda Civic Code - Manifold Absolute Pressure Sensor Circuit High Voltage
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 1999 Honda Civic indicates Manifold Absolute Pressure Sensor Circuit High Voltage.
- 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 1999 Honda Civic 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 1999 Honda Civic?
- 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 1999 Honda Civic?
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 1999 Honda Civic 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 1999 Honda Civic Code
1. What are the common symptoms of OBDII code P0108 on a 1999 Honda Civic?
- Common symptoms include poor engine performance, rough idling, stalling, decreased fuel efficiency, and illuminated Check Engine light.
2. What does the OBDII code P0108 for a 1999 Honda Civic indicate?
- The code P0108 indicates a high voltage condition in the Manifold Absolute Pressure (MAP) sensor circuit.
3. What are the possible causes of OBDII code P0108 on a 1999 Honda Civic?
- Possible causes include a faulty MAP sensor, damaged wiring or connectors in the sensor circuit, a clogged or damaged vacuum line, or issues with the engine's computer.
4. How can I diagnose the cause of OBDII code P0108 on my 1999 Honda Civic?
- You can diagnose the issue by inspecting the MAP sensor and its wiring, checking for vacuum leaks, using a multimeter to test voltage readings, and scanning the vehicle's computer for additional error codes.
5. Can I drive my 1999 Honda Civic with OBDII code P0108?
- It is not recommended to drive your vehicle with code P0108, as it can lead to engine performance issues and potential damage. It's best to address the issue promptly.
6. How can I repair OBDII code P0108 on my 1999 Honda Civic?
- Repair options include replacing the MAP sensor, repairing or replacing damaged wiring or connectors, fixing any vacuum leaks, and resetting the Check Engine light after the repair.
7. Will resetting the Check Engine light resolve OBDII code P0108 on my 1999 Honda Civic?
- Resetting the light will only temporarily clear the code. It is essential to diagnose and repair the underlying issue to prevent the code from reoccurring.
8. Can a dirty air filter cause OBDII code P0108 on a 1999 Honda Civic?
- While a dirty air filter can affect engine performance, it is not a direct cause of code P0108. The issue is typically related to the MAP sensor circuit itself.
9. How much does it cost to repair OBDII code P0108 on a 1999 Honda Civic?
- The cost of repair can vary depending on the cause of the code and whether you choose to do the repair yourself or take it to a mechanic. Costs may include parts and labor.
10. Is OBDII code P0108 a common issue in 1999 Honda Civics?
- While not extremely common, code P0108 can occur in 1999 Honda Civics due to various factors like sensor wear, aging wiring, or other related issues.
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