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Engine-Codes – Generic – B10D7

B10D7 Code - PATS Key System Programming Failure

Quick Answer

The B10D7 diagnostic trouble code (DTC) indicates a PATS (Passive Anti-Theft System) key system programming failure in the vehicle. Common causes include Faulty key transponder, Damaged wiring in the PATS system, Malfunctioning ECM. 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
B10D7 indicates PATS Key System Programming Failure.
Common causes
Common causes include Faulty key transponder, Damaged wiring in the PATS system, Malfunctioning ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B10D7 Description

The B10D7 diagnostic trouble code (DTC) indicates a PATS (Passive Anti-Theft System) key system programming failure in the vehicle. The PATS system is designed to prevent unauthorized starting of the vehicle by requiring a specific key with a programmed transponder chip to be present in the ignition. When this code is triggered, it means that there is an issue with the programming of the key system, which can lead to the vehicle not starting or experiencing other related problems.

OBDII Code B10D7 - PATS Key System Programming Failure
B10D7 Code - PATS Key System Programming Failure

Common Causes of B10D7

  1. Faulty key transponder
  2. Damaged wiring in the PATS system
  3. Malfunctioning ECM
  4. Incorrect key programming
  5. Issues with the key fob or remote entry system

Symptoms of B10D7

  1. Engine cranks but does not start
  2. Vehicle starts intermittently
  3. Security light on the dashboard remains illuminated
  4. Inability to program new keys
  5. Engine stalling while driving

How to Fix B10D7

  1. Check the key transponder for proper functioning and replace if necessary.
  2. Inspect the wiring in the PATS system for any damage or corrosion and repair as needed.
  3. Perform a diagnostic scan to identify any ECM issues and address them accordingly.
  4. Re-program the keys using the manufacturer's recommended procedure.
  5. Test the vehicle to ensure the issue is resolved and the engine starts reliably.

Cost to Fix B10D7

The typical repair costs for addressing a PATS key system programming failure can range from $200 to $500, depending on the specific cause of the issue and the parts/labour required for the repair. It's important to note that diagnosis time and labour rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable pricing.

What does this mean?

Tech Notes for B10D7

B10D7:05 PATS Key: System Programming Failure

B10D7:81 PATS Key: Invalid Serial Data Received

B10D7:87 PATS Key: Missing Message

Need more information about the B10D7 code?

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Code B10D7 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B10D7 Code

1. What does the OBDII code B10D7 mean?

The B10D7 code indicates a PATS (Passive Anti-Theft System) key system programming failure, meaning the vehicle’s anti-theft system failed to recognize or program a key.

2. What are the common symptoms of the B10D7 code?

Typical symptoms include the engine not starting, the anti-theft warning light staying on or flashing, and a "no key detected" message in keyless systems.

3. What causes the B10D7 code to appear?

This code is usually triggered by an unprogrammed key, a damaged key transponder, a faulty PATS module, or communication issues between the control modules.

4. Can the B10D7 code be caused by a low battery in the key fob?

Yes, a low or dead key fob battery can prevent the PATS system from detecting the key properly, potentially triggering the code.

5. How do you fix the B10D7 code?

Fixes include programming the key using a compatible scan tool, replacing the key or key fob battery, or repairing/replacing the PATS module if necessary.

6. Can I program a key myself to resolve the B10D7 code?

In some cases, you may be able to program a key yourself using the owner’s manual instructions if you have two working keys. Otherwise, a professional tool or dealership service is required.

7. Does the B10D7 code mean the key is permanently unusable?

Not necessarily. The key may still be reprogrammed unless it is physically damaged or the transponder is defective.

8. What tools are required to fix the B10D7 code?

A professional diagnostic scan tool capable of key programming is required to diagnose and resolve this code properly.

9. Can a faulty ignition switch cause the B10D7 code?

Yes, a malfunctioning ignition switch can prevent the system from detecting the key, leading to this code.

10. Is the B10D7 code specific to any vehicle brand?

The B10D7 code is commonly found in Ford vehicles but may also appear in other brands that use similar PATS systems.

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