AutoCodesCadillac – B2719 Cadillac

B2719 Cadillac Code - Trunk Tamper Switch Fault

Quick Answer

A test is run to determine if the trunk tamper switch is active when Platform Zone Module (PZM) is in an off, idle, ready to arm, arm initiated or arm delay state. Common causes include Faulty Trunk Tamper Switch, Trunk Tamper Switch harness is open or shorted, Trunk Tamper Switch 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
B2719 Cadillac indicates Trunk Tamper Switch Fault.
Common causes
Common causes include Faulty Trunk Tamper Switch, Trunk Tamper Switch harness is open or shorted, Trunk Tamper Switch 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 1,076
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 26, 2020
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Code B2719 Cadillac Description

A test is run to determine if the trunk tamper switch is active when Platform Zone Module (PZM) is in an off, idle, ready to arm, arm initiated or arm delay state. DTC B2719 will set when PZM determines the trunk tamper switch has been active for 2 seconds. When DTC B2719 is set, UTD will still arm, disregarding input from the trunk tamper switch. DTC B2719 will clear when the trunk tamper switch is not active on the next ignition switch transition to RUN or CRANK position.
OBDII Code B2719 Cadillac - Trunk Tamper Switch Fault - AutoCodes.com
B2719 Cadillac Code - Trunk Tamper Switch Fault

What are the Possible Causes of the DTC B2719 Cadillac?

  • Faulty Trunk Tamper Switch
  • Trunk Tamper Switch harness is open or shorted
  • Trunk Tamper Switch circuit poor electrical connection

How to Fix the DTC B2719 Cadillac?

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 B2719 Cadillac 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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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 B2719 Cadillac Code

1. What does the OBDII code B2719 mean on a Cadillac?

B2719 indicates a Trunk Tamper Switch Fault, which means the vehicle's system has detected an issue with the trunk tamper switch, often linked to the security or theft deterrent system.

2. What are the common symptoms of code B2719?

Symptoms may include the trunk not latching properly, security system warnings or alerts, or the vehicle alarm being triggered unexpectedly.

3. What causes the B2719 code to appear on a Cadillac?

The most common causes are a faulty trunk tamper switch, damaged or corroded wiring, a misaligned trunk latch, or a malfunctioning theft deterrent module.

4. How do I diagnose the B2719 code?

Start by visually inspecting the trunk tamper switch and its wiring for damage or corrosion. Use a scan tool to monitor the switch’s operation and test its electrical circuit for continuity.

5. Can I still drive my Cadillac with the B2719 code active?

Yes, you can typically drive with this code active, but the security system might not function properly, leaving the vehicle more vulnerable to theft.

6. How do I fix the B2719 Trunk Tamper Switch Fault?

Repairs may include replacing the trunk tamper switch, repairing or replacing damaged wiring, cleaning corroded connections, or realigning the trunk latch.

7. How much does it cost to fix the B2719 code on a Cadillac?

Repair costs can range from $100 to $300, depending on whether the switch needs replacement or if wiring repairs are necessary.

8. Can a dead battery cause a B2719 code?

A dead or weak battery can sometimes cause false error codes, including B2719, due to voltage irregularities affecting the security system.

9. Will clearing the code fix the problem?

Clearing the code may temporarily turn off the warning, but if the underlying issue isn’t fixed, the code will likely reappear.

10. Is the B2719 code specific to Cadillac vehicles?

Yes, while the code structure is part of the OBDII system, the B2719 code and its description are specific to Cadillac models with a trunk tamper switch.

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