Quick Answer
P0108 means: P0108 means the MAP sensor is reporting a high pressure reading.
Can I drive with P0108? Immediate attention is advisable to prevent engine performance issues.
Common Questions
What does P0108 mean and how does it affect my car?
P0108 indicates that your vehicle's MAP sensor is sending a high-pressure signal to the ECM. This can lead to poor engine performance, increased fuel consumption, and potential stalling. Addressing this issue is vital for maintaining optimal vehicle functionality.
What are the most common causes of P0108 and how much does it cost to fix?
Common causes include a faulty MAP sensor (70% chance), vacuum leaks, and damaged wiring. Repair costs can range from $50 to $300, depending on whether you need a sensor replacement or wiring repairs.
Can I drive my car with P0108 or should I stop immediately?
While you may be able to drive short distances, it’s not recommended to ignore the P0108 code. Continuing to drive can lead to more severe engine issues. It's best to seek immediate diagnostics and repairs.
How can I diagnose P0108 myself using GeekOBD APP?
Using the GeekOBD APP, you can connect to your vehicle’s OBD2 port to read the stored codes. Follow the app's instructions to retrieve freeze frame data, which provides context on the conditions when the fault occurred.
What vehicles are most commonly affected by P0108?
The P0108 code is frequently seen in 2010-2015 Ford F-150s and 2008-2012 Honda Accords. Other makes may also experience this issue, especially those with turbocharged engines.
How can I prevent P0108 from happening again?
Regular maintenance, including checking for vacuum leaks and ensuring electrical connections are clean and secure, can help prevent the P0108 code from reappearing.
What is P0108?
The P0108 code indicates that the Engine Control Module (ECM) has detected a high input from the manifold absolute pressure (MAP) sensor or the barometric pressure sensor. The MAP sensor plays a crucial role in measuring the engine's intake manifold pressure, which helps the ECM adjust the air-fuel mixture for optimal combustion. When the input exceeds the predetermined threshold, it triggers this code. This can lead to poor engine performance, increased fuel consumption, and even stalling. In real-world scenarios, drivers may notice a rough idle or a lack of power during acceleration. Ignoring this code can lead to further engine problems, making it essential for owners to address it promptly. The P0108 code is commonly found in vehicles with turbocharged engines, as they often experience higher manifold pressures. Regular maintenance and timely diagnostics can help prevent this issue from escalating.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0108 is present:
- Check engine light stays on constantly, indicating a persistent issue that requires attention.
- Engine hesitates during acceleration, leading to a frustrating driving experience, especially when merging onto highways.
- Fuel economy decreased by 10-15%, resulting in more frequent trips to the gas station and increased overall operating costs.
- Rough idle when the engine is at a standstill, making the vehicle feel unstable and unresponsive.
- Potential stalling or loss of power during driving, which can pose safety risks if the vehicle unexpectedly loses acceleration.
Possible Causes
Most common causes of P0108 (ordered by frequency):
- The most common cause is a faulty MAP sensor, which occurs in about 70% of cases. This can happen due to wear and tear or exposure to extreme conditions.
- A vacuum leak in the intake system is another significant cause, as it can lead to incorrect pressure readings. Make sure to inspect hoses and connections for any signs of wear.
- Corroded or damaged wiring and connectors can also trigger the P0108 code. Regularly inspecting the electrical connections can help prevent this issue.
- Less common but serious causes include a malfunctioning ECM, which may require reprogramming or replacement.
- Rarely, a blocked intake manifold can lead to pressure discrepancies, but this is less frequently encountered in everyday vehicle maintenance.
P0108 Repair Costs
Cost Breakdown by Repair Type
MAP Sensor Replacement
Replacing the faulty MAP sensor with a new one.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repairing corroded or damaged wiring and connectors.
- Total: $50 - $100
- Success rate: 75%
Money-Saving Tips for P0108
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional P0108 Diagnosis Process
Follow these systematic steps to accurately diagnose P0108. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the MAP sensor and related wiring (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the MAP sensor and related wiring (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes).
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: 2013 Ford F-150 MAP Sensor Replacement
Vehicle: 2013 Ford F-150, 85,000 miles
Problem: Customer complained of poor acceleration and a persistent check engine light.
Diagnosis: Initial OBD2 scan revealed P0108. Visual inspection showed a faulty MAP sensor.
Solution: Replaced the MAP sensor and cleared the codes.
Cost: $200 (including parts and labor)
Result: Customer reported improved acceleration and no further warning lights.
Case Study 2: 2011 Honda Accord Wiring Repair
Vehicle: 2011 Honda Accord, 90,000 miles
Problem: Engine stalling intermittently and check engine light on.
Diagnosis: OBD2 scan indicated P0108 along with visual inspection revealing corroded wiring.
Solution: Repaired the wiring harness and verified sensor functionality.
Cost: $100 (including parts and labor)
Result: Vehicle operated smoothly post-repair with no further issues.