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B1602 Lincoln Code - PATS Received Invalid Format Of Key-Code From Ignition Key Transponder

Quick Answer

The B1602 diagnostic trouble code for Lincoln vehicles indicates that the Passive Anti-Theft System (PATS) has received an invalid format of the key-code from the ignition key transponder. Common causes include Faulty ignition key transponder, Wiring issues between the transponder and PATS module, Faulty PATS module. 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
B1602 Lincoln indicates PATS Received Invalid Format Of Key-Code From Ignition Key Transponder.
Common causes
Common causes include Faulty ignition key transponder, Wiring issues between the transponder and PATS module, Faulty PATS module.
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 17, 2024
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Code B1602 Lincoln Description

The B1602 diagnostic trouble code for Lincoln vehicles indicates that the Passive Anti-Theft System (PATS) has received an invalid format of the key-code from the ignition key transponder. PATS is a security feature designed to prevent unauthorized starting of the vehicle. When the system detects an issue with the key-code format, it triggers the B1602 code and may prevent the vehicle from starting or cause other related issues.

OBDII Code B1602 Lincoln - PATS Received Invalid Format Of Key-Code From Ignition Key Transponder
B1602 Lincoln Code - PATS Received Invalid Format Of Key-Code From Ignition Key Transponder

Common Causes of B1602 Lincoln

  1. Faulty ignition key transponder
  2. Wiring issues between the transponder and PATS module
  3. Faulty PATS module
  4. Incorrectly programmed key
  5. Low battery voltage affecting communication between components

Symptoms of B1602 Lincoln

  1. Engine cranks but does not start
  2. Immobilizer warning light illuminated on the dashboard
  3. Engine starts but immediately stalls
  4. Inability to start the vehicle at all

How to Fix B1602 Lincoln

  1. Check the ignition key transponder for any visible damage and replace if necessary.
  2. Inspect the wiring harness between the transponder and PATS module for any breaks or shorts and repair as needed.
  3. Test the PATS module for proper functionality and replace if faulty.
  4. Re-program the ignition key to ensure it is correctly recognized by the PATS system.
  5. Check and recharge or replace the vehicle's battery if low voltage is affecting communication.

Cost to Fix B1602 Lincoln

The cost of repairing a B1602 code can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty ignition key transponder can range from $50 to $200, while replacing a PATS module can cost between $200 and $500. Wiring repairs may cost around $100 to $300, and reprogramming the key can range from $50 to $150. Overall, the total repair cost for addressing a B1602 code can range from $200 to $1000, including parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate pricing.

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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 B1602 Lincoln Code

1. What are the common symptoms of OBDII code B1602 in a Lincoln vehicle?

- Common symptoms include difficulty starting the engine, engine stalling, and the vehicle's anti-theft system being triggered.

2. What does the OBDII code B1602 in a Lincoln indicate?

- The code B1602 indicates that the Passive Anti-Theft System (PATS) in the vehicle received an invalid format of the key-code from the ignition key transponder.

3. What are the possible causes of OBDII code B1602 in a Lincoln?

- Possible causes include a defective ignition key transponder, a faulty PATS control module, wiring issues, or a mismatch between the key and the PATS system.

4. How can I diagnose the OBDII code B1602 in my Lincoln?

- Diagnostic steps may include checking the ignition key transponder, inspecting the wiring for any damage, and using a diagnostic scan tool to communicate with the PATS system.

5. Can I repair OBDII code B1602 in my Lincoln myself?

- Depending on the cause, repairs may range from reprogramming the key to replacing the PATS control module. Some repairs may require specialized tools and expertise, so it's recommended to consult a professional mechanic.

6. Is it safe to continue driving my Lincoln with OBDII code B1602?

- It is not advisable to drive the vehicle with code B1602 unresolved, as it may result in the vehicle not starting or the anti-theft system being continuously activated.

7. How much does it typically cost to repair OBDII code B1602 in a Lincoln?

- Repair costs can vary depending on the exact cause of the issue and the required repairs. It's best to get a diagnostic assessment from a qualified mechanic to determine the cost.

8. How long does it take to repair OBDII code B1602 in a Lincoln?

- The repair time can vary based on the complexity of the issue and the availability of replacement parts. Some repairs may be completed within a few hours, while others may take longer.

9. Can resetting the vehicle's computer clear OBDII code B1602?

- Resetting the vehicle's computer may temporarily clear the code, but it is likely to return if the underlying issue causing the code is not addressed.

10. Are there any preventive measures to avoid OBDII code B1602 in a Lincoln?

- Regularly maintaining the ignition key and PATS system, avoiding exposure to extreme temperatures, and using the correct key can help prevent issues that may trigger code B1602.

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