B07AC - Understanding the Diagnostic Trouble Code for 2018-2021 Ford F-150 and Other Models

Quick Answer

B07AC means: B07AC indicates a fault in the rear left door latch assembly.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with B07AC? It is crucial to address this issue promptly as it affects vehicle safety.

Common Questions

What does B07AC mean and how does it affect my car?

The B07AC code indicates a problem with the rear left door latch assembly, which can prevent the door from locking or unlocking properly. This not only poses an inconvenience but can also lead to safety issues while driving, as unsecured doors can open unexpectedly.

What are the most common causes of B07AC and how much does it cost to fix?

The most common cause of the B07AC code is a faulty latch, which can cost between $150 and $300 to replace. Electrical issues and corrosion are also common causes, with repair costs varying depending on the extent of the damage.

Can I drive my car with B07AC or should I stop immediately?

While you can technically drive with the B07AC code, it is not advisable due to safety risks. An unsecured door can be dangerous, especially at higher speeds. It's best to address this issue as soon as possible.

How can I diagnose B07AC myself using GeekOBD APP?

To diagnose the B07AC code using the GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Retrieve the codes and look for B07AC. Review the freeze-frame data to understand the context of the fault, then perform a visual inspection of the door latch and wiring.

What vehicles are most commonly affected by B07AC?

The B07AC code is most commonly found in the 2018-2021 Ford F-150. Other Ford models with similar door locking systems may also experience this code, particularly if they are within the same production years.

How can I prevent B07AC from happening again?

Regular maintenance, including inspections of electrical connections and the door latch mechanism, can help prevent the B07AC code from reappearing. Keeping the latch clean and free from corrosion will also extend its lifespan.

What is B07AC?

The B07AC diagnostic trouble code (DTC) indicates a problem with the vehicle's rear left door latch assembly. This code is specific to certain Ford models, particularly the 2018 to 2021 Ford F-150, and may also appear in other vehicles equipped with similar systems. When the B07AC code is triggered, it usually means that the vehicle's onboard diagnostics have detected a fault within the door lock mechanism or its related components. This can manifest as a malfunctioning door lock, causing it to fail to secure the door properly or to respond to the locking/unlocking commands. Real-world implications of this code can range from inconvenience—like a door that won’t lock or unlock—to safety concerns, as an unsecured door poses a risk while driving. Ignoring this issue may lead to further complications in the locking system, potentially increasing repair costs. Therefore, addressing the B07AC code promptly is recommended to ensure the safety and functionality of your vehicle.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B07AC is present:

  • The check engine light may illuminate, indicating a fault in the electronic systems related to the door.
  • You might experience difficulties when trying to lock or unlock the rear left door, with the lock mechanism either failing to respond or becoming stuck.
  • There may be unusual noises from the rear left door area when locking or unlocking, possibly due to mechanical failure.
  • In some cases, the rear left door may not close properly, leading to a gap that can compromise passenger safety.
  • You may notice that the interior lights do not turn off when the door is closed, suggesting that the door latch may not be signaling correctly.

Possible Causes

Most common causes of B07AC (ordered by frequency):

  1. The most common cause of the B07AC code is a faulty rear left door latch, which accounts for approximately 60% of cases. Over time, wear or damage may prevent the latch from functioning properly.
  2. Another possible cause is electrical issues, such as damaged wiring or poor connections. This can disrupt the signals sent to the latch mechanism, leading to failures in operation.
  3. Corrosion of the latch mechanism itself can also be a contributing factor, especially in vehicles exposed to harsh weather conditions. Regular inspections and maintenance can help prevent this.
  4. Less common but serious causes include failure of the body control module, which controls the locking mechanisms and can lead to comprehensive locking issues.
  5. In rare cases, a software glitch in the vehicle's onboard computer may mistakenly trigger the B07AC code, requiring a reprogramming of the vehicle’s system.

B07AC Repair Costs

Cost Breakdown by Repair Type

Replace Rear Left Door Latch

Replacing the faulty door latch assembly to restore proper locking functionality.

  • Total: $150 - $300
  • Success rate: 85%
Repair Wiring Issues

Fixing damaged wiring or connections related to the door latch.

  • Total: $80 - $150
  • Success rate: 75%
Money-Saving Tips for B07AC
  • 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 B07AC Diagnosis Process

Follow these systematic steps to accurately diagnose B07AC. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion around the rear left door latch (5-10 minutes)

Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion around the rear left door latch (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Use an OBD2 scanner or the GeekOBD APP to retrieve the B07AC code along with any other related codes and freeze-frame data to understand the fault context (10-15 minutes)

Step 2: Use an OBD2 scanner or the GeekOBD APP to retrieve the B07AC code along with any other related codes and freeze-frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Conduct component testing using a multimeter to verify the voltage and ground at the latch assembly (20-30 minutes)

Step 3: Conduct component testing using a multimeter to verify the voltage and ground at the latch assembly (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: Test the door latch mechanism for proper operation after repairs, ensuring that it locks and unlocks correctly (10-15 minutes)

Step 4: Test the door latch mechanism for proper operation after repairs, ensuring that it locks and unlocks correctly (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test the vehicle under various conditions to confirm that the issue has been resolved and that the B07AC code does not reappear (15-20 minutes)

Step 5: Road test the vehicle under various conditions to confirm that the issue has been resolved and that the B07AC code does not reappear (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

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: Ford F-150 Door Lock Malfunction

Vehicle: 2020 Ford F-150, 25,000 miles

Problem: Customer reported that the rear left door would not lock or unlock using the remote.

Diagnosis: Initial inspection revealed a faulty door latch. Diagnostic scans confirmed the B07AC code.

Solution: The rear left door latch assembly was replaced, and wiring connections were cleaned.

Cost: $250 (Parts: $180 for the latch, $70 for labor)

Result: The door locking mechanism was restored to proper function, with no further issues reported.

Case Study 2: Electrical Issue in 2019 Ford Explorer

Vehicle: 2019 Ford Explorer, 30,000 miles

Problem: Customer experienced intermittent locking issues with the rear left door.

Diagnosis: Diagnostics showed a B07AC code along with faulty wiring that was disrupting the latch's operation.

Solution: Wiring was repaired and the latch was tested for proper function.

Cost: $120 (Parts: $20 for connectors, $100 for labor)

Result: The issue was resolved, and the door functioned normally thereafter.

Diagnose B07AC

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B07AC
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes