AutoCodes – Land Rover – P1672 Land Rover

P1672 Land Rover Code - Engine Anti-Theft Signal Wrong Code Received

Quick Answer

The Body Control Unit (BCU) uses the driver's door key lock and unlock switches to activate and deactivate the security system. Common causes include Faulty Body Control Unit (BCU), Body Control Unit harness is open or shorted, Body Control Unit circuit poor electrical connection. 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: P1672 Land Rover indicates Engine Anti-Theft Signal Wrong Code Received.
Common causes: Common causes include Faulty Body Control Unit (BCU), Body Control Unit harness is open or shorted, Body Control Unit circuit poor electrical connection.
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.

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Code Popularity 4,661

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 19, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1672 Land Rover Description

The Body Control Unit (BCU) uses the driver's door key lock and unlock switches to activate and deactivate the security system. The driver's door lock is also used for entering the EKA.
For immobilization, the BCU disables the starter motor relay. When the engine is cranking, the Engine Control Module (ECM) looks for a coded signal from the BCU. If the signal is not received within one second of cranking, the fuel supply to the engine is stopped and the injectors are disabled. This also prevents unburnt fuel from entering the catalyst.
If the BCU is disconnected, the engine starter motor will remain isolated by the starter motor relay and the ECM will remain immobilized. The main wiring for the system is contained within the main harness, which is relatively inaccessible, so preventing intruders from disabling the system by cutting the wires for the immobilization system. Once the immobilizer has been activated, the destruction of the trigger device or the wiring to it will not disarm the system.
The RF transmitter communicates to the BCU via the RF receiver using a 70 bit code. Pressing the unlock button on the transmitter will re-mobilize the vehicle. The RF transponder is integrated into the metal key assembly, inserting the key into the ignition switch will induce a signal in the exciter coil to re-mobilize the vehicle.
If Diagnostic Trouble Code (DTC) P1672 is set, there is an engine anti-theft signal circuit wrong code received with ECM is SECURE state.

OBDII Code P1672 Land Rover - Engine Anti-Theft Signal Wrong Code Received - AutoCodes.com — P1672 Land Rover Code - Engine Anti-Theft Signal Wrong Code Received

What does this mean?

What are the Possible Causes of the DTC P1672 Land Rover?

Faulty Body Control Unit (BCU)
Body Control Unit harness is open or shorted
Body Control Unit circuit poor electrical connection

How to Fix the DTC P1672 Land Rover?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1672 Land Rover code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1672 Land Rover code?

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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 P1672 Land Rover Code

1. What are the common symptoms of OBDII code P1672 in a Land Rover related to the Engine Anti-Theft Signal Wrong Code Received?

- Common symptoms include difficulty starting the vehicle, the engine not turning over, and the security light staying illuminated.

2. What could cause the OBDII code P1672 to trigger in a Land Rover?

- The code can be triggered by issues such as a faulty key fob, a problem with the immobilizer system, or a malfunction in the engine control module.

3. How can I diagnose the OBDII code P1672 in my Land Rover?

- Diagnosing the code typically involves using a diagnostic scanner to retrieve the specific fault codes stored in the vehicle's computer system. Additionally, checking the key fob, immobilizer system, and engine control module for any issues is recommended.

4. Is it safe to continue driving my Land Rover with the OBDII code P1672 present?

- It is not recommended to drive the vehicle with the code active, as it may lead to potential starting issues or engine immobilization while driving.

5. What are some repair tips for resolving the OBDII code P1672 in a Land Rover?

- Repair tips may include checking and replacing the key fob battery, reprogramming the key fob, inspecting and repairing any wiring issues related to the immobilizer system, or recalibrating the engine control module.

6. Can I reset the OBDII code P1672 in my Land Rover on my own?

- You can attempt to clear the code by using a diagnostic scanner to reset the vehicle's computer system. However, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair the OBDII code P1672 in a Land Rover?

- The cost of repair can vary depending on the specific cause of the code. Simple fixes like replacing a key fob battery may be inexpensive, while more complex issues with the immobilizer system or engine control module could be more costly.

8. Can a DIY enthusiast fix the OBDII code P1672 in a Land Rover?

- Depending on the underlying cause of the code, some DIY enthusiasts may be able to address the issue themselves, such as replacing a key fob battery. However, more complex issues may require professional diagnosis and repair.

9. How long does it take to repair the OBDII code P1672 in a Land Rover?

- The repair time can vary based on the cause of the code and the complexity of the fix. Simple solutions like replacing a key fob battery can be done quickly, while more intricate repairs may take longer.

10. Are there any preventive measures to avoid the OBDII code P1672 in a Land Rover?

- Regularly inspecting and maintaining your key fob, immobilizer system, and engine control module can help prevent issues that may trigger the code. Additionally, ensuring your vehicle's security system is functioning correctly can reduce the risk of encountering this code.