AutoCodes – Pontiac – P1682 Pontiac

P1682 Pontiac Code - Ignition 1 Switch Circuit 2

Quick Answer

There are 2 ignition 1 voltage circuits supplied to the Engine Control Module (ECM). Common causes include Faulty ignition switch, Ignition Switch harness is open or shorted, Ignition 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: P1682 Pontiac indicates Ignition 1 Switch Circuit 2.
Common causes: Common causes include Faulty ignition switch, Ignition Switch harness is open or shorted, Ignition 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 24,719

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 Jul 19, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1682 Pontiac Description

There are 2 ignition 1 voltage circuits supplied to the Engine Control Module (ECM). The first ignition circuit is provided by the powertrain relay, through a fuse. This ignition 1 voltage circuit supplies power to all the internal ECM circuits associated with the throttle actuator control (TAC) operation. The second ignition 1 voltage circuit is supplied by the run/crank relay through a fuse and is used to power the remaining internal ECM circuits. If the ECM detects a voltage difference between the 2 ignition 1 voltage circuits, DTC P1682 will set.

OBDII Code P1682 Pontiac - Ignition 1 Switch Circuit 2 - AutoCodes.com — P1682 Pontiac Code - Ignition 1 Switch Circuit 2

What does this mean?

What are the Possible Causes of the DTC P1682 Pontiac?

Faulty ignition switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1682 Pontiac?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1682 Pontiac 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 P1682 Pontiac code?

Need more information on how to fix the P1682 Pontiac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1682 Pontiac 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 P1682 Pontiac Code

1. What does OBDII code P1682 Pontiac mean?

- It indicates a problem with the Ignition 1 Switch Circuit 2 in a Pontiac vehicle.

2. What are common symptoms of P1682 in a Pontiac?

- Common symptoms include issues with starting the vehicle, stalling, or the engine not turning off properly.

3. What are the possible causes of the Ignition 1 Switch Circuit 2 issue?

- The main causes can be a faulty ignition switch, wiring problems, a bad ignition relay, or a malfunctioning ignition control module.

4. How can I diagnose the P1682 code in my Pontiac?

- Diagnosis typically involves checking the ignition switch, inspecting the wiring for damage, and testing related components like the ignition relay and control module.

5. Can I still drive my Pontiac with the P1682 code?

- It is not recommended to drive the vehicle with the P1682 code present, as it can lead to potential safety hazards or further damage to the vehicle.

6. How can I repair the Ignition 1 Switch Circuit 2 issue in my Pontiac?

- Repair steps may involve replacing the faulty ignition switch, repairing damaged wiring, or replacing the malfunctioning ignition relay or control module.

7. Will resetting the OBDII code P1682 fix the problem in my Pontiac?

- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing the Ignition 1 Switch Circuit 2 problem.

8. Is the Ignition 1 Switch Circuit 2 issue a common problem in Pontiac vehicles?

- This issue can occur in Pontiac vehicles, particularly in models with aging ignition components or electrical system issues.

9. Can a DIY enthusiast fix the P1682 code in a Pontiac at home?

- Depending on your mechanical skills and access to tools, some DIY enthusiasts may be able to diagnose and repair the Ignition 1 Switch Circuit 2 problem at home.

10. How much does it cost to repair the P1682 code in a Pontiac at a professional auto repair shop?

- Repair costs for the Ignition 1 Switch Circuit 2 issue can vary depending on the exact cause of the problem, but it may range from $200 to $500 at a professional auto repair shop.