AutoCodes – Cadillac – P1673 Cadillac

P1673 Cadillac Code - EVAP Vent Solenoid Control Circuit Conditions

Quick Answer

With the key on or engine running, the Powertrain Control Module (PCM) detects an improper voltage level on the Vent Solenoid control circuit for 30 seconds. Common causes include Faulty EVAP Vent Solenoid, EVAP Vent Solenoid harness is open or shorted, EVAP Vent Solenoid 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 Cadillac indicates EVAP Vent Solenoid Control Circuit Conditions.
Common causes: Common causes include Faulty EVAP Vent Solenoid, EVAP Vent Solenoid harness is open or shorted, EVAP Vent Solenoid 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 2,769

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1673 Cadillac Description

With the key on or engine running, the Powertrain Control Module (PCM) detects an improper voltage level on the Vent Solenoid control circuit for 30 seconds.

OBDII Code P1673 Cadillac - EVAP Vent Solenoid Control Circuit Conditions - AutoCodes.com — P1673 Cadillac Code - EVAP Vent Solenoid Control Circuit Conditions

What does this mean?

What are the Possible Causes of the DTC P1673 Cadillac?

Faulty EVAP Vent Solenoid
EVAP Vent Solenoid harness is open or shorted
EVAP Vent Solenoid circuit poor electrical connection

How to Fix the DTC P1673 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 P1673 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 P1673 Cadillac Code

1. What does the OBDII code P1673 mean on a Cadillac?

P1673 indicates an issue with the EVAP (Evaporative Emission Control System) Vent Solenoid Control Circuit, which affects the vehicle's ability to manage fuel vapor emissions.

2. What are the symptoms of the P1673 code in a Cadillac?

Common symptoms include an illuminated Check Engine Light, potential fuel odors near the vehicle, and possibly reduced fuel efficiency.

3. What causes the P1673 code to appear?

Causes may include a faulty EVAP vent solenoid, damaged wiring or connectors in the circuit, or a malfunctioning powertrain control module (PCM).

4. Can I drive my Cadillac with the P1673 code?

While the car may still be drivable, ignoring the code could lead to increased emissions and potential long-term damage to the EVAP system.

5. How do I diagnose the P1673 code on a Cadillac?

Start by using a scan tool to confirm the code, then inspect the EVAP vent solenoid, wiring, and connectors for damage or corrosion.

6. How do I fix the P1673 code on my Cadillac?

Repairs may include replacing the EVAP vent solenoid, repairing damaged wiring, or cleaning corroded connectors in the circuit.

7. What tools are needed to diagnose the P1673 code?

A scan tool for reading and clearing codes, a multimeter for testing electrical connections, and possibly a smoke machine to check for leaks in the EVAP system.

8. How much does it cost to fix the P1673 code on a Cadillac?

Repair costs can range from $50 to $200, depending on whether the issue is a simple wiring repair or a replacement of the EVAP vent solenoid.

9. Can a loose gas cap cause the P1673 code on a Cadillac?

While a loose gas cap typically triggers other EVAP-related codes, it's still worth inspecting the cap and ensuring it’s tightened securely.

10. Will clearing the P1673 code solve the problem permanently?

Clearing the code without addressing the underlying issue will only temporarily remove the Check Engine Light. The issue will likely return until proper repairs are made.