Quick Answer
P0667 means: P0667 indicates a low voltage issue in the intake manifold tuning valve control circuit.
Can I drive with P0667? Immediate attention is recommended to prevent engine performance issues.
Common Questions
What does P0667 mean and how does it affect my car?
The P0667 code indicates a low voltage issue in the intake manifold tuning valve control circuit, which can lead to reduced engine performance and efficiency. If left unresolved, it may cause further damage to the engine or lead to stalling.
What are the most common causes of P0667 and how much does it cost to fix?
Common causes include a faulty IMTV, damaged wiring, or a weak ECM. Repair costs can range from $200 to $500 depending on the issue and required parts.
Can I drive my car with P0667 or should I stop immediately?
While it may still be drivable, it's recommended to address the P0667 code as soon as possible to prevent further damage or safety issues, especially during acceleration.
How can I diagnose P0667 myself using GeekOBD APP?
Using the GeekOBD APP, start by scanning for diagnostic trouble codes. Review freeze frame data to understand vehicle conditions at the time of the fault. Perform a visual inspection of the IMTV and its connections.
What vehicles are most commonly affected by P0667?
This code is frequently seen in the 2013-2017 Ford F-150, Ford Explorer, and similar models equipped with variable intake systems.
How can I prevent P0667 from happening again?
Regular maintenance, including checking and cleaning electrical connections and inspecting the IMTV for wear, can help prevent the recurrence of the P0667 code.
What is P0667?
The P0667 diagnostic trouble code indicates a problem with the Intake Manifold Tuning Valve (IMTV) control circuit. This valve plays a crucial role in optimizing engine performance by adjusting the airflow into the engine based on various operating conditions. When the P0667 code is triggered, it typically means that the Engine Control Module (ECM) has detected a low voltage condition in the control circuit of the IMTV. This can lead to several performance issues, such as rough idling, decreased power and acceleration, and increased fuel consumption. In a real-world scenario, drivers may notice their vehicle hesitating during acceleration or struggling to maintain speed, especially under load. Ignoring this code can result in further engine damage or a complete loss of power, making it vital for car owners to address the issue promptly. Vehicles like the 2015 Ford F-150 are particularly susceptible to this code due to wear and tear on the electrical connections and the IMTV itself. A thorough diagnostic process is essential to pinpoint the exact cause and implement an effective repair.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0667 is present:
- Check engine light stays on constantly, indicating a persistent issue that needs attention.
- Engine hesitates during acceleration, making it difficult to merge onto highways or overtake other vehicles safely.
- Fuel economy decreased by 10-15%, leading to higher fuel costs and frequent trips to the gas station.
- Rough idle when the vehicle is stationary, causing vibrations and audible engine noise.
- Loss of power during high load conditions, such as driving uphill or towing, affecting overall driving experience.
Possible Causes
Most common causes of P0667 (ordered by frequency):
- Faulty Intake Manifold Tuning Valve (IMTV) - occurs in about 40% of cases, often due to wear or internal failure.
- Damaged wiring or connectors in the control circuit - seen in around 30% of cases, usually from corrosion or fraying.
- Weak or failing Engine Control Module (ECM) - about 15% of cases, leading to incorrect voltage readings.
- Vacuum leaks affecting the IMTV operation - less common but serious, can lead to engine stalling.
- Issues with the vehicle's electrical system, such as blown fuses or poor grounding - rare but can cause multiple DTCs.
P0667 Repair Costs
Cost Breakdown by Repair Type
Intake Manifold Tuning Valve Replacement
Replace the faulty IMTV with an OEM or aftermarket part to restore functionality.
- Total: $200 - $500
- Success rate: 95%
Money-Saving Tips for P0667
- 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 P0667 Diagnosis Process
Follow these systematic steps to accurately diagnose P0667. 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 to check the voltage and resistance of the IMTV and its wiring (20-30 minutes)
Step 3: Component testing - Use a multimeter to check the voltage and resistance of the IMTV and its wiring (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes return (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes return (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: 2015 Ford F-150 P0667 Repair Case
Vehicle: 2015 Ford F-150, 75,000 miles
Problem: Customer reported rough idling and decreased acceleration power.
Diagnosis: After scanning, P0667 was found. Visual inspection revealed corroded wiring to the IMTV.
Solution: Replaced the damaged wiring and the intake manifold tuning valve.
Cost: $450 (parts: $250, labor: $200)
Result: Vehicle performance improved significantly; no further issues reported.
Case Study 2: 2016 Ford Explorer P0667 Resolution
Vehicle: 2016 Ford Explorer, 50,000 miles
Problem: Check engine light was on; customer experienced poor fuel economy.
Diagnosis: OBD2 scan revealed P0667, with a faulty IMTV confirmed through multimeter testing.
Solution: Replaced the IMTV and reprogrammed the ECM.
Cost: $500 (parts: $300, labor: $200)
Result: Fuel economy returned to normal, and the check engine light remained off.