AutoCodes – Oldsmobile – P1629 Oldsmobile

P1629 Oldsmobile Code - Theft Deterrent Start Enable Signal Not Received

Quick Answer

The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and the Body Control Module (BCM) are an integral part of the vehicle theft deterrent system. Common causes include Deterrent key not programmed to vehicle, Faulty Deterrent key, Faulty ignition switch. 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
P1629 Oldsmobile indicates Theft Deterrent Start Enable Signal Not Received.
Common causes
Common causes include Deterrent key not programmed to vehicle, Faulty Deterrent key, Faulty ignition switch.
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 1,049
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 08, 2021
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Code P1629 Oldsmobile Description

The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and the Body Control Module (BCM) are an integral part of the vehicle theft deterrent system. The theft deterrent system authenticates the security code programmed into each of these modules to prevent unauthorized vehicle operation. This authentication process includes the following steps:
1.When the ignition is turned ON or the door is unlocked by remote key the BCM and the key exchange security data to verify the correct key is used.
2.Once the correct key has been confirmed and the ignition is turned ON, the PIM and BCM exchange data to confirm the correct BCM and PIM are being used.
3.Once the correct key, BCM, and PIM are confirmed, the PIM and ECM exchange data to allow the vehicle to start.
4.The data exchange processes conducted use various encrypted data exchanges between each of the devices.
OBDII Code P1629 Oldsmobile - Theft Deterrent Start Enable Signal Not Received - AutoCodes.com
P1629 Oldsmobile Code - Theft Deterrent Start Enable Signal Not Received

What are the Possible Causes of the DTC P1629 Oldsmobile?

  • Deterrent key not programmed to vehicle
  • Faulty Deterrent key
  • Faulty ignition switch
  • Poor electrical connection for Deterrent circuit components

How to Fix the DTC P1629 Oldsmobile?

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 P1629 Oldsmobile 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 P1629 Oldsmobile code?

Need more information on how to fix the P1629 Oldsmobile code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1629 Oldsmobile code diagnosed by a professional: Find a repair shop in your area

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 P1629 Oldsmobile Code

1. What are the common symptoms of OBDII code P1629 in an Oldsmobile related to the "Theft Deterrent Start Enable Signal Not Received"?

- Common symptoms include the vehicle not starting, the security light staying on or flashing, and the engine stalling shortly after starting.

2. What are the possible causes of OBDII code P1629 in an Oldsmobile?

- The code P1629 can be caused by issues with the ignition key, the ignition lock cylinder, a faulty theft deterrent module, or wiring problems related to the anti-theft system.

3. How can I diagnose the cause of OBDII code P1629 in my Oldsmobile?

- To diagnose the issue, you can start by checking the key for damage, ensuring the key is programmed correctly, inspecting the ignition lock cylinder, and testing the theft deterrent module and related wiring for any faults.

4. Can I still drive my Oldsmobile with OBDII code P1629?

- It is not recommended to drive your vehicle with the code P1629 present, as it can lead to starting issues and potential engine stalling. It is best to address the problem promptly.

5. How can I reset OBDII code P1629 in my Oldsmobile?

- Resetting the code typically involves using an OBDII scanner to clear the code after addressing the underlying cause, such as fixing issues with the anti-theft system components.

6. Is it possible to repair OBDII code P1629 in an Oldsmobile by myself?

- While some DIY enthusiasts may be able to address simple causes of the code, diagnosing and repairing issues related to the theft deterrent system may require specialized tools and knowledge, making it best left to professionals.

7. Will OBDII code P1629 in my Oldsmobile cause permanent damage if not fixed immediately?

- Failure to address the code P1629 promptly can potentially lead to more severe issues like complete engine immobilization or permanent damage to the anti-theft system components.

8. Are there any preventive measures to avoid OBDII code P1629 in an Oldsmobile?

- Regularly maintaining your vehicle, ensuring proper programming of keys, and promptly addressing any issues with the theft deterrent system can help prevent the occurrence of code P1629.

9. How long does it typically take to repair OBDII code P1629 in an Oldsmobile?

- The repair time for code P1629 can vary depending on the underlying cause and the complexity of the repairs needed, ranging from a few hours to a day or more in some cases.

10. Can a faulty battery or alternator cause OBDII code P1629 in an Oldsmobile?

- While a faulty battery or alternator can cause starting issues, they are not typically direct causes of code P1629. It is important to diagnose the specific anti-theft system components to address the code correctly.

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