P1673 Land Rover Code - Engine Anti-Theft Signal New ECM Not Configured
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
- P1673 Land Rover indicates Engine Anti-Theft Signal New ECM Not Configured.
- 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.
Code P1673 Land Rover Description
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) P1673 is set, there is an engine anti-theft signal NEW ECM not configured after a NEW ECM has been installed.
What are the Possible Causes of the DTC P1673 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 P1673 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 P1673 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.
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Frequently Asked Questions about P1673 Land Rover Code
1. What are the common symptoms of OBDII code P1673 on a Land Rover related to "Engine Anti-Theft Signal New ECM Not Configured"?
- Common symptoms include difficulty starting the vehicle, engine stalling, and the immobilizer system being activated.
2. What could cause the OBDII code P1673 to trigger on a Land Rover?
- The code P1673 can be triggered when a new Engine Control Module (ECM) is installed but not properly configured with the anti-theft system.
3. How can I troubleshoot OBDII code P1673 on my Land Rover?
- To troubleshoot code P1673, you should check the connections between the new ECM and the vehicle's anti-theft system. Ensure the ECM is programmed correctly for the specific Land Rover model.
4. Can I drive my Land Rover with OBDII code P1673 present?
- It is not recommended to drive your vehicle with code P1673 active, as it may lead to starting issues or stalling while driving.
5. How do I repair OBDII code P1673 related to "Engine Anti-Theft Signal New ECM Not Configured" on my Land Rover?
- The repair typically involves reprogramming or configuring the new ECM to communicate properly with the anti-theft system. This may require professional diagnostic equipment.
6. Is it possible to reset OBDII code P1673 on my Land Rover without professional help?
- You may be able to clear the code temporarily using an OBDII scanner, but the underlying issue of the new ECM not being configured correctly must be addressed for a permanent solution.
7. Will OBDII code P1673 on my Land Rover cause permanent damage if left unresolved?
- While the code itself may not cause immediate damage, ignoring it could lead to potential issues with the vehicle's anti-theft system and overall performance.
8. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P1673 on a Land Rover?
- Depending on the individual's skill level, it may be possible to address the code by ensuring the new ECM is properly configured. However, professional help is recommended for accurate diagnosis and repair.
9. How long does it typically take to resolve OBDII code P1673 on a Land Rover?
- The time needed to resolve code P1673 can vary based on the complexity of the issue and the availability of specialized tools. It's best to consult a qualified mechanic for an accurate estimate.
10. Are there any preventive measures to avoid encountering OBDII code P1673 on a Land Rover in the future?
- To prevent code P1673, ensure that any ECM replacements are properly configured and programmed by a qualified technician to avoid compatibility issues with the anti-theft system.
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