Quick Answer
U0267 means: U0267 indicates a lost communication with the auxiliary fuel pump module, which can affect fuel delivery and engine performance.
Can I drive with U0267? Immediate diagnosis and repair are recommended to avoid further engine issues.
Common Questions
What does U0267 mean and how does it affect my car?
The U0267 code indicates that your car's Engine Control Module can't communicate with the Auxiliary Fuel Pump Module. This can lead to power loss, poor fuel economy, and starting issues, which can be frustrating and potentially dangerous if not addressed promptly.
What are the most common causes of U0267 and how much does it cost to fix?
Common causes include a faulty auxiliary fuel pump module and damaged wiring. Repair costs typically range from $100 to $600, depending on the specific issue and required repairs.
Can I drive my car with U0267 or should I stop immediately?
It's best to refrain from driving your vehicle if U0267 is present, as it can lead to severe engine performance issues. Immediate diagnosis and repair are recommended.
How can I diagnose U0267 myself using the GeekOBD APP?
You can use the GeekOBD APP to scan for DTCs and retrieve freeze frame data. Look for any related codes and inspect the fuel pump module area for visible signs of damage.
What vehicles are most commonly affected by U0267?
This code is frequently seen in models like the 2016-2020 Ford Explorer and other vehicles equipped with auxiliary fuel systems.
How can I prevent U0267 from happening again?
Regular maintenance, including checking wiring integrity and the performance of the auxiliary fuel pump, can help prevent this issue from arising in the future.
What is U0267?
The diagnostic trouble code (DTC) U0267 indicates a communication issue between the Engine Control Module (ECM) and the Auxiliary Fuel Pump Module (AFPM). This code is particularly relevant for vehicles that have a secondary fuel pump that assists in fuel delivery during high-demand scenarios, such as high-performance driving or when towing. When the ECM cannot receive signals from the AFPM, it triggers the U0267 code. This disruption can lead to various performance issues, including reduced engine power, engine stalling, or even failure to start. Additionally, you'll likely see the check engine light illuminated on your dashboard. It's essential to address this issue promptly, as ignoring it could lead to more severe engine performance problems and could affect your vehicle's fuel efficiency. Regular maintenance and diagnostic checks can help prevent such issues from arising. This code is often found in modern vehicles equipped with advanced fuel management systems, making it crucial for drivers to be aware of its implications.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0267 is present:
- The check engine light remains illuminated, indicating a fault that requires attention.
- You may experience engine hesitation during acceleration, which can be frustrating and could compromise safety.
- Fuel economy might decrease significantly, often by 10-15%, leading to more frequent trips to the gas station.
- Difficulty starting the engine may occur, particularly after the vehicle has been sitting for a while.
- You might hear unusual noises from the rear of the vehicle where the auxiliary fuel pump is located.
Possible Causes
Most common causes of U0267 (ordered by frequency):
- The most common cause is a faulty auxiliary fuel pump module, which occurs in about 60% of cases. This can happen due to wear and tear or electrical issues.
- Another frequent cause is damaged wiring or poor connections between the ECM and the AFPM, which can lead to intermittent communication failures.
- Corrosion in the vehicle's wiring harness can also contribute to this issue. Regular inspections can help catch this problem early.
- Less common but serious causes include a malfunctioning ECM, which can misinterpret signals and lead to multiple error codes.
- A rare cause could be a software issue in the vehicle's engine control system, requiring a software update from the dealership.
U0267 Repair Costs
Cost Breakdown by Repair Type
Auxiliary Fuel Pump Replacement
Replacing the faulty auxiliary fuel pump module is the most effective solution.
- Total: $300 - $600
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or poor connections can resolve communication issues.
- Total: $100 - $300
- Success rate: 80%
ECM Reprogramming
In rare cases, reprogramming the ECM might be necessary after replacing the fuel pump.
- Total: $150 - $400
- Success rate: 70%
Money-Saving Tips for U0267
- 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 U0267 Diagnosis Process
Follow these systematic steps to accurately diagnose U0267. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Start with an initial visual inspection
Step 1: Start with an initial visual inspection. Look for any obvious signs of damage, such as frayed wires or loose connectors in the fuel pump module area (5-10 minutes).
Step 2: Step 2: Utilize an OBD2 scanner, such as the GeekOBD APP, to retrieve all diagnostic trouble codes and freeze frame data for context (10-15 minutes)
Step 2: Utilize an OBD2 scanner, such as the GeekOBD APP, to retrieve all diagnostic trouble codes and freeze frame data for context (10-15 minutes). This will help you understand the conditions under which the code was triggered.
Step 3: Step 3: Conduct component testing using a multimeter to check the voltage and ground at the auxiliary fuel pump module (20-30 minutes)
Step 3: Conduct component testing using a multimeter to check the voltage and ground at the auxiliary fuel pump module (20-30 minutes). Make sure to verify the specifications from the vehicle's service manual.
Step 4: Step 4: Once repairs are made, perform a system function test to ensure everything operates correctly and clear any codes from the ECM (10-15 minutes)
Step 4: Once repairs are made, perform a system function test to ensure everything operates correctly and clear any codes from the ECM (10-15 minutes).
Step 5: Step 5: Finally, conduct a road test under various conditions to confirm the repair has resolved the issue (15-20 minutes)
Step 5: Finally, conduct a road test under various conditions to confirm the repair has resolved the issue (15-20 minutes). This step ensures that the vehicle runs smoothly and that the problem does not recur.
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: 2018 Ford Explorer - U0267 Diagnosis and Repair
Vehicle: 2018 Ford Explorer, 50,000 miles
Problem: Customer reported poor acceleration and a persistent check engine light.
Diagnosis: Performed an OBD2 scan revealing U0267. Inspected wiring and found a corroded connector.
Solution: Replaced the corroded connector and auxiliary fuel pump module.
Cost: $450 (parts $300, labor $150)
Result: Vehicle performance improved, and the check engine light was cleared.
Case Study 2: 2017 Ford Explorer - Wiring Issue Leading to U0267
Vehicle: 2017 Ford Explorer, 60,000 miles
Problem: Customer experienced engine stalling and difficulty starting.
Diagnosis: Diagnostic scan confirmed U0267. Visual inspection revealed damaged wires.
Solution: Repaired wiring and reconnected the auxiliary fuel pump.
Cost: $200 (parts $50, labor $150)
Result: The vehicle started without issues, and the customer reported improved fuel efficiency.